Developer Tools
134 companies in this sector.
| # | Company | Description | Location | Status | Funding |
|---|---|---|---|---|---|
| 01 | OpenAI | AI research company building artificial general intelligence, creator of ChatGPT, GPT-4, DALL-E, and the OpenAI API platform. | San Francisco, US | Private | $167.9B |
| 02 | Stripe | Financial infrastructure platform that powers online payment processing for internet businesses of all sizes. Provides a suite of APIs and tools for accepting payments, managing subscriptions, preventing fraud, issuing cards, and handling complex financial operations across 195+ countries. | San Francisco, US | Private | $7.9B |
| 03 | Epic Games | Creator of Fortnite, the Unreal Engine game development platform, and the Epic Games Store. One of the most valuable private gaming companies in the world. | Cary, United States | Private | $7.5B |
| 04 | Cursor | Cursor is an AI-powered code editor built by Anysphere, forked from VS Code. It uses large language models to provide intelligent code completion, multi-line editing, chat-based coding assistance, and agentic coding workflows. The company crossed $1 billion in annualized revenue and 1 million daily active users by late 2025, making it one of the fastest-growing SaaS products in history. | San Francisco, United States | Private | $3.4B |
| 05 | Anysphere | Anysphere builds Cursor, an AI-powered code editor that helps developers write, refactor, and review code using natural language. Founded by four MIT students in 2022, the company has grown to over $1 billion in annualized revenue and is one of the fastest-growing SaaS companies in history. | San Francisco, US | Private | $3.4B |
| 06 | Snyk | Developer security platform that helps software teams find, prioritize, and fix vulnerabilities in open source dependencies, container images, infrastructure as code, and proprietary code | Boston, United States | Private | $1.5B |
| 07 | Plaid | Fintech infrastructure company that builds data connectivity tools to power the apps in people's financial lives, providing APIs to connect applications with users' bank accounts. | San Francisco, US | Private | $1.3B |
| 08 | Applied Intuition | Applied Intuition is a vehicle software supplier that builds simulation, validation, and development tools for autonomous driving and ADAS. The company serves 18 of the top 20 global automakers and has expanded from pure simulation into a full autonomy stack, incorporating generative AI capabilities for automotive, trucking, mining, agriculture, and defense industries. | Mountain View, United States | Private | $1.2B |
| 09 | Bird | Cloud communications and CRM platform enabling businesses to engage customers across SMS, email, WhatsApp, and other channels via APIs. Originally known as MessageBird, rebranded to Bird in February 2024. Serves 15,000+ customers across 170+ countries with AI-powered marketing, sales, and payment tools. | Amsterdam, NL | Private | $1.1B |
| 10 | Chainguard | Software supply chain security company that provides hardened container images with zero known vulnerabilities, offering a catalog of over 1,300 continuously updated, fully signed images with software bills of materials (SBOMs) for enterprises | Kirkland, United States | Private | $892M |
| 11 | Vercel | Frontend cloud platform and creator of Next.js, the popular React framework. Provides developers with tools for building, deploying, and scaling web applications with instant global delivery, serverless functions, and edge computing infrastructure. | San Francisco, US | Private | $863M |
| 12 | Replit | AI-powered cloud development platform that enables anyone to build software in a browser, known for popularizing vibe coding with its Replit Agent and serving 40M+ users on track for $1B ARR. | San Francisco, United States | Private | $852M |
| 13 | Grafana Labs | Open-source observability platform providing visualization, monitoring, and analytics tools for metrics, logs, and traces, building and maintaining the widely used Grafana dashboard and a composable observability stack | New York, United States | Private | $804M |
| 14 | Figma | Collaborative interface design tool that runs in the browser, enabling real-time multiplayer editing for design teams. | San Francisco, US | Public | $749M |
| 15 | Unity Technologies | Creator of the Unity game engine, the world's most widely used real-time 3D development platform. Powers over 70% of mobile games and is expanding into film, automotive, architecture, and industrial applications. | San Francisco, United States | Public | $749M |
| 16 | Temporal Technologies | Open-source durable execution platform for building reliable distributed applications. Provides "virtual durable memory" that maintains application state across failures. Critical execution layer for AI agents in production, used by OpenAI, Anthropic, Netflix, JPMorgan Chase, Snap, Airbnb, and Stripe. | Bellevue, US | Private | $650M |
| 17 | Cockroach Labs | Developer of CockroachDB, a cloud-native distributed SQL database designed for global, scalable, and resilient applications that survive disasters and maintain consistency across multiple regions | New York, United States | Private | $633M |
| 18 | Alchemy | Alchemy is a blockchain infrastructure and developer platform often described as the 'AWS of blockchain.' The company provides APIs, node infrastructure, and developer tools that power the majority of top Web3 applications, including OpenSea, MetaMask, and Robinhood. Alchemy handles over $100B in annualized on-chain transactions and serves developers across 197 countries. | San Francisco, United States | Private | $545M |
| 19 | Together AI | AI cloud infrastructure company that builds and operates a platform for running, training, and fine-tuning open-source AI models, enabling organizations to incorporate generative AI into production applications | San Francisco, United States | Private | $534M |
| 20 | Supabase | Open-source alternative to Firebase built on Postgres, providing developers with a backend platform including database, authentication, real-time subscriptions, storage, and edge functions | Singapore, Singapore | Private | $496M |
| 21 | Confluent | Enterprise data streaming platform built on Apache Kafka. Founded by the creators of Kafka at LinkedIn, Confluent provides the infrastructure for real-time data pipelines and event-driven architectures. | Mountain View, United States | Acquired | $456M |
| 22 | GitLab | Open-core DevSecOps platform delivered as a single application for the entire software development lifecycle, from planning and source code management to CI/CD, security, and monitoring. | San Francisco, US | Public | $434M |
| 23 | Postman | API development platform that simplifies building, testing, documenting, and sharing APIs, used by over 30 million developers and 500,000 organizations worldwide with a collaborative workspace for the entire API lifecycle | San Francisco, United States | Private | $433M |
| 24 | dbt Labs | dbt Labs is the company behind dbt (data build tool), an open-source analytics engineering framework that enables data teams to transform data in their warehouses using SQL. Originally founded as Fishtown Analytics, the company signed a definitive agreement to merge with Fivetran in October 2025 in an all-stock deal, creating a combined data infrastructure company approaching $600M in ARR. | Philadelphia, United States | Private | $416M |
| 25 | Starburst | Starburst is the commercial company behind Trino (formerly PrestoSQL), the open-source distributed SQL query engine. The platform provides a data lakehouse analytics layer that lets enterprises query data across any source without requiring data movement or migration. | Boston, United States | Private | $414M |
| 26 | Hugging Face | Open-source platform and community for machine learning, providing tools, pre-trained models, and datasets that enable developers and researchers to build, train, and deploy AI models, often called the GitHub of machine learning | New York, United States | Private | $395M |
| 27 | Solana Labs | Technology company behind the Solana blockchain, a high-performance Layer 1 platform using a novel Proof of History consensus mechanism alongside proof-of-stake to achieve thousands of transactions per second with low fees. Builds developer tooling, mobile products (Saga phone), and an incubation studio for decentralized applications. | San Francisco, California, United States | Private | $360M |
| 28 | GitHub | The world's leading software development platform and code hosting service, built on Git. Home to over 100 million developers and the center of open-source collaboration. | San Francisco, US | Acquired | $350M |
| 29 | Aptos Labs | Layer 1 blockchain company building the Aptos network, designed for safety, scalability, and mainstream Web3 adoption. Uses the Move programming language originally developed for Meta's discontinued Diem stablecoin project. Features a parallel execution engine (Block-STM) for high throughput. Founded by two former Meta engineers who led key aspects of the Diem blockchain. | Palo Alto, United States | Private | $350M |
| 30 | HashiCorp | Developer of open-source infrastructure automation tools including Terraform, Vault, Consul, and Nomad. Acquired by IBM for $6.4 billion in 2025. | San Francisco, United States | Acquired | $349M |
| 31 | Kong | Kong is the company behind the most widely adopted open-source API gateway and service connectivity platform. Originally founded as Mashape (an API marketplace), the company pivoted to focus on its open-source Kong Gateway and rebranded in 2017. Kong Konnect enables enterprises to manage, secure, and observe APIs across hybrid and multi-cloud environments. | San Francisco, United States | Private | $344M |
| 32 | Webflow | Visual web development platform that lets designers and developers build professional, custom websites without writing code, generating clean HTML, CSS, and JavaScript in real time. Bootstrapped for five years before raising venture capital. | San Francisco, US | Private | $335M |
| 33 | Algolia | Search-as-a-service platform that provides hosted APIs enabling developers to build fast, relevant search and discovery experiences across websites and applications. | San Francisco, US | Private | $334M |
| 34 | Contentful | Headless content management system and content infrastructure platform that enables developers and content creators to manage, store, and deliver digital content across websites, apps, and devices through an API-first approach. Serves enterprise customers globally. | Berlin, Germany | Private | $333M |
| 35 | Alpaca | Alpaca provides brokerage API and trading infrastructure that enables fintech companies and developers to build stock and crypto trading experiences into their applications. | San Mateo, US | Private | $333M |
| 36 | Black Forest Labs | Black Forest Labs is a frontier AI lab building state-of-the-art generative AI models for images and video. Founded by the creators of Stable Diffusion, the company develops the FLUX family of open-source text-to-image models, which have achieved over 400 million downloads and are used by Adobe, Canva, Meta, and Microsoft. | Freiburg, Germany | Private | $331M |
| 37 | Fireworks AI | Generative AI inference platform that enables developers to build, tune, and deploy AI models on open-source foundations with production-ready speed and scale. Founded by former Meta PyTorch team leaders. Processes inference across a globally distributed cloud infrastructure. | Redwood City, United States | Private | $327M |
| 38 | MongoDB | Provides a developer data platform built around its flagship document-oriented NoSQL database, offering cloud database services (MongoDB Atlas), enterprise server, and related tools for building modern applications at scale. | New York, United States | Public | $311M |
| 39 | Aleo | Layer 1 blockchain platform that uses zero-knowledge cryptography to enable developers to build privacy-preserving, scalable decentralized applications. Offers a hybrid approach where developers choose what data is public and what remains private. Provides Leo, a programming language for writing zero-knowledge smart contracts. Mainnet launched September 2024. | San Francisco, United States | Private | $298M |
| 40 | Segment | Customer data infrastructure platform that collects, cleans, and routes customer data to hundreds of analytics, marketing, and data warehouse tools through a single API. Founded by four MIT students as part of Y Combinator S11. | San Francisco, US | Acquired | $282M |
| 41 | Chronosphere | Cloud-native observability platform providing monitoring, alerting, and analytics for microservices architectures. Helps engineering teams manage the complexity of distributed systems at scale. | New York, United States | Acquired | $277M |
| 42 | Tailscale | Software-defined mesh VPN based on WireGuard that enables teams to securely connect devices and services with zero-configuration networking and zero-trust access controls. Developer-focused networking tool that replaces traditional corporate VPNs. | Toronto, Canada | Private | $275M |
| 43 | Axiom | Builds verified AI systems that use formal mathematics to prove the correctness of AI-generated code, scoring a perfect 12/12 on the Putnam Competition in December 2025 | San Francisco, United States | Private | $264M |
| 44 | Anyscale | Anyscale is the company behind Ray, the open-source distributed computing framework originally developed at UC Berkeley. The platform enables developers to scale Python and AI workloads from a laptop to a cluster with minimal code changes, providing managed cloud infrastructure for training, serving, and scaling AI applications. | San Francisco, United States | Private | $260M |
| 45 | MuleSoft | MuleSoft is an integration platform provider that helps organizations connect applications, data, and devices across on-premises and cloud environments. Built on the open-source Mule ESB project, MuleSoft's Anypoint Platform became the leading integration platform as a service (iPaaS), serving hundreds of enterprise customers worldwide before being acquired by Salesforce for $6.5 billion in 2018. | San Francisco, United States | Acquired | $259M |
| 46 | Render | Modern cloud platform that makes it easy for developers to deploy and scale web applications, APIs, databases, and static sites without managing infrastructure or DevOps. Positioned as a Heroku alternative with 4.5M+ developers on the platform. | San Francisco, United States | Private | $257M |
| 47 | n8n | Open-source workflow automation platform that enables technical teams to build complex automations using a visual, node-based interface with support for hundreds of integrations and AI-powered orchestration for agentic workflows | Berlin, Germany | Private | $254M |
| 48 | Weights & Biases | AI developer platform providing tools for machine learning experiment tracking, model fine-tuning, dataset versioning, and LLM evaluation. Used by teams at OpenAI, NVIDIA, and other leading AI organizations. Acquired by CoreWeave in 2025 for $1.7B. | San Francisco, United States | Acquired | $250M |
| 49 | Twilio | Cloud communications platform that provides programmable APIs for voice, SMS, video, and email, enabling developers to embed communication capabilities directly into their applications. Twilio powers customer engagement for hundreds of thousands of businesses worldwide. | San Francisco, United States | Public | $233M |
| 50 | JFrog | JFrog is a DevOps platform company that provides universal software supply chain solutions, including its flagship product Artifactory, a universal artifact repository manager for managing and distributing software packages. | Sunnyvale, United States | Public | $226M |
| 51 | DigitalOcean | DigitalOcean is a cloud infrastructure provider that simplifies cloud computing for developers, startups, and small-to-medium businesses. The company offers on-demand compute, storage, networking, and managed databases, serving over 500,000 customers globally. | New York, United States | Public | $224M |
| 52 | Sourcegraph | Code intelligence platform that helps developers search, understand, and fix code across large, complex codebases. Provides universal code search, batch changes, and code insights for enterprise engineering teams. | San Francisco, US | Private | $223M |
| 53 | Fastly | Fastly is an edge cloud platform that provides content delivery network services, edge computing, security, and video and streaming solutions to help enterprises deliver fast, secure digital experiences at global scale. | San Francisco, United States | Public | $219M |
| 54 | Sentry | Open-source application monitoring platform that helps developers identify, diagnose, and resolve errors and performance issues in real time across multiple programming languages and frameworks. Used by millions of developers worldwide. | San Francisco, United States | Private | $217M |
| 55 | Netlify | Netlify is a web development platform that provides hosting, continuous deployment, and serverless backend services for modern web projects. The company pioneered the Jamstack architecture, enabling developers to build faster, more secure websites. | San Francisco, United States | Private | $202M |
| 56 | WorkOS | Developer platform providing APIs for enterprise-ready features including single sign-on (SSO), directory sync (SCIM), audit logging, and user management, enabling any SaaS application to quickly support enterprise authentication and identity requirements. Customers include OpenAI, Anthropic, xAI, Cursor, Perplexity, and Vercel. | San Francisco, United States | Private | $199M |
| 57 | Nominal | Nominal builds the unified, real-time test stack for physical systems. The platform helps engineering teams developing complex hardware (aircraft, satellites, autonomous vehicles, fusion energy systems, weapons programs) to test, validate, and monitor their systems continuously. | Los Angeles, US | Private | $183M |
| 58 | Cloudflare | Web infrastructure and security company providing content delivery network, DDoS mitigation, Internet security, and distributed DNS services, helping to build a faster, more secure internet for millions of websites and applications. | San Francisco, US | Public | $182M |
| 59 | Airbyte | Open-source data integration platform that enables organizations to consolidate data from APIs, databases, and files into data warehouses, lakes, and other destinations through a library of hundreds of pre-built connectors. Y Combinator W20 batch. | San Francisco, United States | Private | $181M |
| 60 | Code Metal | AI-powered platform for verifiable code translation and optimization across programming languages and hardware systems. Uses neuro-symbolic AI combining large language models with formal verification methods to ensure provably correct translations for mission-critical industries including defense, aerospace, semiconductors, and automotive. | - | Private | $178M |
| 61 | Mux | Mux provides video infrastructure for developers through an API-first platform. Its core products are Mux Video (encoding, storage, and streaming) and Mux Data (quality-of-experience analytics monitoring billions of streams). | San Francisco, United States | Private | $174M |
| 62 | PagerDuty | Cloud-based incident management and digital operations platform that helps IT teams detect, triage, and resolve infrastructure and application issues in real time through intelligent alerting, on-call scheduling, and automated response orchestration. | San Francisco, US | Public | $174M |
| 63 | PostHog | Open-source product analytics platform that combines event tracking, session replay, feature flags, A/B testing, surveys, error monitoring, and a data warehouse into a single integrated tool for product engineers. Y Combinator W20 batch. | San Francisco, United States | Private | $172M |
| 64 | Hex | Collaborative, AI-powered workspace for data science and analytics that integrates SQL, Python, R, and no-code tools, enabling data teams to explore, analyze, and share insights across their organizations. | San Francisco, United States | Private | $172M |
| 65 | Teleport | Teleport is the infrastructure identity company, providing on-demand, least-privileged access to infrastructure on a foundation of cryptographic identity and zero trust. The platform integrates access management, zero trust networking, and identity security into a single solution, replacing passwords and secrets with true identity for engineers and services. Previously known as Gravitational, the company was founded by the Mailgun team (YC W11, acquired by Rackspace). | Oakland, United States | Private | $169M |
| 66 | Coder | Self-hosted platform for cloud development environments that enables developers and AI coding agents to build software securely and efficiently on any infrastructure. Open-source tools used by over 1.2 million monthly active users. Customers include Dropbox, Discord, and Skydio. | Austin, United States | Private | $168M |
| 67 | DFINITY Foundation | DFINITY Foundation is a not-for-profit organization that builds and maintains the Internet Computer, a web-speed, internet-scale public blockchain. The platform enables smart contracts to serve interactive web content directly to browsers, allowing developers to build fully decentralized applications and enterprise systems. | Zurich, Switzerland | Private | $167M |
| 68 | Elastic | Open-source search and analytics company behind Elasticsearch, Kibana, and the Elastic Stack. Provides enterprise search, observability, and security solutions used by thousands of organizations worldwide for log analysis, application monitoring, and threat detection. | San Francisco, United States | Public | $162M |
| 69 | LangChain | Open-source framework and platform for building applications powered by large language models, providing tools for prompt management, chains, agents, memory, and observability through its commercial LangSmith product | San Francisco, United States | Private | $160M |
| 70 | Dash0 | Agentic observability platform built natively on OpenTelemetry. AI agents identify root causes, create dashboards, manage deployments, optimize costs, and detect security risks in real time. Serves 600+ paying customers including Zalando and Taco Bell. | Zurich, Switzerland | Private | $155M |
| 71 | Rigetti Computing | Rigetti Computing is a full-stack quantum computing company that designs and fabricates superconducting quantum processors, integrates them into quantum computers, and delivers access through its Quantum Cloud Services platform. The company operates the world's first dedicated quantum chip foundry. | Berkeley, US | Public | $155M |
| 72 | Stack Overflow | Stack Overflow is the largest Q&A platform for software developers, serving over 100 million monthly visitors. The platform enables programmers to ask and answer technical questions, share knowledge, and build their careers. It also offers Stack Overflow for Teams, a private collaboration product for enterprise customers. | New York, United States | Acquired | $153M |
| 73 | Datadog | Cloud-scale monitoring and analytics platform providing infrastructure monitoring, application performance management, log management, and security monitoring for developers, IT operations, and business teams. | New York, US | Public | $148M |
| 74 | Retool | Low-code development platform that enables companies to build internal tools, admin panels, and dashboards quickly using drag-and-drop components. Used by tens of thousands of companies including Amazon, DoorDash, and Mercedes-Benz. | San Francisco, United States | Private | $141M |
| 75 | Pinecone | Pinecone is the leading vector database platform for building accurate, performant AI applications at scale. Founded by former AWS Director of Research Edo Liberty, the company provides a fully managed, serverless infrastructure that makes it easy to connect enterprise data with large language models and other AI systems. | New York, United States | Private | $138M |
| 76 | Storyblok | Headless content management system combining an API-first approach with a visual editor, enabling both developers and non-technical users like marketers to create, manage, and deliver content experiences across any digital platform. Fully remote company across 45+ countries. | Linz, Austria | Private | $138M |
| 77 | Linear | Project management and issue tracking software designed for modern software teams, built by former Airbnb, Coinbase, and Uber engineers with a focus on speed, craft, and streamlined user experience, used by over 15,000 companies including OpenAI, Scale AI, and Perplexity | San Francisco, United States | Private | $134M |
| 78 | Stytch | Developer-first identity and access management platform providing authentication, authorization, and fraud prevention APIs. Enables companies to build secure passwordless login experiences and enterprise-ready identity infrastructure. Acquired by Twilio in November 2025. | San Francisco, United States | Acquired | $126M |
| 79 | Neon | Serverless Postgres platform that separates storage and compute, enabling autoscaling, database branching, and scale-to-zero for developers and AI agents. Acquired by Databricks for ~$1B in May 2025. | San Francisco, United States | Acquired | $126M |
| 80 | Braintrust | AI-native observability and evaluation platform that helps engineering and product teams evaluate, log, and monitor AI agents and large language model interactions in production. Built on a custom database optimized for massive AI trace data, the platform enables teams to run experiments against real datasets, compare prompts side-by-side, catch regressions in CI, and inspect every trace with real-time latency, cost, and quality metrics. | San Francisco, US | Private | $124M |
| 81 | Railway | Cloud infrastructure platform that simplifies software deployment for developers, offering instant provisioning, autoscaling, and AI-native tooling as an alternative to traditional cloud providers like AWS. | San Francisco, United States | Private | $124M |
| 82 | Qodo | AI code review, testing, and governance platform that helps enterprises manage AI-generated code quality. Multi-agent code review system that factors in organizational standards, historical context, and risk tolerance. Customers include Nvidia, Walmart, Red Hat, and Intuit. | Tel Aviv, Israel | Private | $121M |
| 83 | Weaviate | Open-source vector database platform that enables developers to store, search, and manage data objects and their vector embeddings at scale, powering AI-native applications with semantic search, generative capabilities, and hybrid search functionality. | Amsterdam, Netherlands | Private | $120M |
| 84 | Zilliz | Creator of Milvus, the world's most widely adopted open-source vector database. Provides enterprise-grade vector database solutions for AI applications including similarity search, recommendation systems, and retrieval-augmented generation (RAG). Relocated from Shanghai to Silicon Valley in 2022. | Redwood City, United States | Private | $113M |
| 85 | Fly.io | Fly.io is a developer-focused public cloud platform that runs full-stack applications and databases close to end users using Firecracker micro-VMs. The platform distributes containerized apps to servers across 30+ regions worldwide, providing low-latency performance without the complexity of traditional multi-region deployments. | Chicago, United States | Private | $111M |
| 86 | Encord | Data infrastructure company for physical AI. AI-native platform manages, curates, annotates, and aligns multimodal data for systems powering robots, autonomous vehicles, and drones. Serves 300+ AI teams including Toyota Woven, Skydio, and AXA. Platform grew from 1 to 5+ petabytes of data in 12 months, with physical AI customer revenue growing 10x. | London, GB | Private | $110M |
| 87 | Modal | Serverless cloud platform for AI and ML workloads that lets developers run inference, training, batch processing, and data pipelines at scale without managing infrastructure. Built a custom container runtime, file system, scheduler, and image builder for seamless developer experience. | New York, United States | Private | $110M |
| 88 | 0x | 0x is a decentralized exchange infrastructure protocol enabling peer-to-peer trading of Ethereum-based tokens, powering DEX aggregation and swap APIs for Web3 applications. Founded by Will Warren and Amir Bandeali, the protocol raised $24M in a landmark 2017 token sale and has facilitated billions in on-chain trading volume through its open-source infrastructure. | San Francisco, United States | Private | $110M |
| 89 | Clerk | Clerk provides a complete suite of embeddable authentication UIs, flexible APIs, and admin dashboards for user management. The platform handles sign-up, sign-in, multi-factor authentication, organization management, and session handling, allowing developers to add secure auth to their applications in minutes instead of months. Clerk integrates natively with Next.js, React, and other popular frameworks. | San Francisco, United States | Private | $105M |
| 90 | PlanetScale | PlanetScale is a serverless database platform built on Vitess, the open-source database clustering system originally created to scale YouTube. The platform provides horizontally scalable MySQL and PostgreSQL databases with database branching, non-blocking schema changes, and sharding without downtime. | San Francisco, United States | Private | $105M |
| 91 | incident.io | Incident management platform for engineering teams that integrates with Slack and Microsoft Teams to coordinate, communicate, and learn from software outages. Offers on-call scheduling, incident response workflows, and AI-powered resolution tools. Serves companies like Netflix, Etsy, and Intercom. | London, United Kingdom | Private | $101M |
| 92 | Sanity | Composable content platform providing a real-time, API-first content management system with a fully customizable open-source editing environment called Sanity Studio. Enables developers and content teams to model, manage, and deliver structured content across any digital channel. | San Francisco, United States | Private | $101M |
| 93 | MotherDuck | MotherDuck is a serverless cloud data warehouse built on the open-source DuckDB database. The platform combines the speed and simplicity of local analytics with the scalability of the cloud, enabling data teams to query data without managing infrastructure. | Seattle, United States | Private | $100M |
| 94 | RudderStack | Open-source customer data platform built for developers that enables companies to collect, unify, and activate customer data across their entire stack, with a warehouse-native architecture that puts the data warehouse at the center of customer data infrastructure. | San Francisco, United States | Private | $82M |
| 95 | Warp | AI-powered terminal emulator built in Rust, combining a modern developer experience with agentic AI capabilities for command suggestions, code generation, and team collaboration across macOS, Windows, and Linux. | New York, United States | Private | $73M |
| 96 | Sift | AI infrastructure platform for mission-critical hardware systems that transforms raw telemetry from satellites, drones, autonomous vehicles, and manufacturing equipment into structured, queryable data. Founded by former SpaceX engineers (Dragon flight software lead and Starlink Constellation Tools lead). Trusted by ULA, Astranis, K2 Space, and Parallel Systems. | El Segundo, United States | Private | $67M |
| 97 | Replicate | Cloud platform for running open-source AI models via API, enabling developers to deploy and scale machine learning models with a single line of code. Hosts a catalog of 50,000+ production-ready models. Acquired by Cloudflare in November 2025 for approximately $550M. | San Francisco, United States | Acquired | $58M |
| 98 | Prisma | Open-source database toolkit for Node.js and TypeScript providing an auto-generated type-safe query builder, declarative data modeling and migrations, and a visual database GUI. Used by over 500,000 developers worldwide. Originally founded as Graphcool. | San Francisco, United States | Private | $57M |
| 99 | Convex | Convex is an open-source reactive backend-as-a-service platform that provides a real-time database, serverless functions, and client SDKs for building live-updating web and mobile apps. The platform integrates a TypeScript-based document store and function runtime for queries and mutations. Convex went open source in March 2024. | San Francisco, United States | Private | $54M |
| 100 | Dagster Labs | Open-source data orchestration platform that helps data engineering teams develop, deploy, and observe data pipelines. Founded by GraphQL co-creator Nick Schrock, Dagster provides a developer-focused alternative to Apache Airflow with asset-based pipeline definitions, built-in testing, and scheduling. | San Francisco, United States | Private | $49M |
| 101 | CoreOS | CoreOS developed Container Linux, a lightweight Linux-based operating system designed for massive server deployments, along with key container infrastructure tools including etcd, rkt, and the Tectonic Kubernetes platform. Founded through Y Combinator (S13), the company built open source infrastructure to enable Google-scale operations for any organization. CoreOS was a founding member of both the Cloud Native Computing Foundation (CNCF) and the Open Container Initiative (OCI). Acquired by Red Hat in January 2018 for $250 million. | San Francisco, US | Acquired | $48M |
| 102 | Prefect | Python-based workflow orchestration platform that empowers data teams to build, run, and monitor resilient data pipelines. Founded as an open-source alternative to Apache Airflow, Prefect provides dataflow automation tools used to orchestrate millions of workflows. | Washington, United States | Private | $47M |
| 103 | Deeptune | AI training gym platform that provides infrastructure and environments for training, fine-tuning, and evaluating machine learning models. Offers standardized benchmarking and optimization tools for AI developers and researchers. | New York, US | Private | $45M |
| 104 | Zed Industries | High-performance, open-source code editor built from scratch in Rust with GPU-accelerated rendering, designed for real-time collaboration between developers and AI agents. Created by the team behind GitHub's Atom editor and the Electron framework. | San Francisco, United States | Private | $45M |
| 105 | Axiom | Cloud-native observability platform providing serverless log management, distributed tracing, and metrics collection for engineering teams. Enables petabyte-scale data ingest with high compression and zero-sampling analytics across logs, traces, and AI workflows. | San Francisco, United States | Private | $41M |
| 106 | Gitpod | Open-source developer platform providing automated, pre-configured cloud development environments. Enables developers to spin up reproducible, ephemeral workspaces with a single click. Rebranded as Ona in September 2025 with a pivot toward AI-driven software engineering agents. | Kiel, Germany | Private | $41M |
| 107 | Turso | Open-source edge database platform powered by libSQL, an open-contribution fork of SQLite, designed to bring data closer to users with global replication across dozens of locations for low-latency, serverless applications. Formerly known as ChiselStrike. | San Francisco, United States | Private | $33M |
| 108 | Cal.com | Open-source scheduling infrastructure platform and Calendly alternative that enables developers and businesses to embed customizable booking experiences, with both self-hosted and cloud-hosted options. Serves 20,000+ customers. | San Francisco, United States | Private | $32M |
| 109 | Inngest | Event-driven durable workflow orchestration platform that enables developers to build reliable multi-step functions, AI pipelines, and background jobs as regular code, with built-in retries, scheduling, and observability, without managing queues or infrastructure. | San Francisco, United States | Private | $30M |
| 110 | Better Stack | Observability platform that combines uptime monitoring, logs, metrics, traces, error tracking, and status pages into a ClickHouse-based alternative to Datadog. Used by over 7,000 customers including Time, Salesforce, and Hugging Face. Became 'unintentionally profitable' in 2023. | Prague, Czech Republic | Private | $29M |
| 111 | LlamaIndex | Data framework and platform that enables developers to build production-grade AI applications powered by large language models over enterprise data, providing tools for data ingestion, indexing, retrieval-augmented generation (RAG), and agentic workflows. Used by thousands of developers globally. | San Francisco, United States | Private | $28M |
| 112 | Deno | Open-source JavaScript and TypeScript runtime built on V8 and Rust, created by Node.js inventor Ryan Dahl. Provides a modern, secure-by-default development experience with native TypeScript support and web-standard APIs. Also operates Deno Deploy, a serverless edge hosting platform. | New York, United States | Private | $26M |
| 113 | Alloy Automation | Alloy Automation is an integration infrastructure platform that helps product and engineering teams connect AI agents and applications to hundreds of SaaS, fintech, commerce, and ERP systems through unified APIs. Founded by Sara Du and Gregg Mojica through Y Combinator W20, the company has become a key middleware layer for e-commerce and enterprise software integrations. | New York, United States | Private | $25M |
| 114 | Corridor | Security platform embedding real-time vulnerability checks into AI code-generation workflows. Its Agentic Coding Security Management platform helps prevent vulnerabilities as code is generated by AI coding tools. | San Francisco, United States | Private | $25M |
| 115 | Resend | Modern email API platform for developers, enabling teams to build, test, and send transactional and marketing emails at scale using familiar tools like React. Powers millions of emails monthly for over 200,000 developers. | San Francisco, United States | Private | $21M |
| 116 | Chroma | Open-source AI-native vector database that helps developers build LLM applications by storing and retrieving embeddings, enabling retrieval-augmented generation and semantic search. Used by thousands of AI developers globally. | San Francisco, United States | Private | $20M |
| 117 | Trigger.dev | Open-source platform for building and deploying fully managed AI agents and workflows in TypeScript, offering long-running tasks with automatic retries, queues, full observability, and elastic scaling. Y Combinator W23 batch. | London, United Kingdom | Private | $20M |
| 118 | Apptimize | Apptimize was a mobile A/B testing and feature release management platform that enabled product teams to run experiments on native iOS and Android apps with the same speed and control as website optimization tools. The company served customers including Glassdoor, HotelTonight, and The Wall Street Journal before being acquired by Airship in 2019. | San Francisco, United States | Acquired | $19M |
| 119 | Astral | Creator of widely used open-source Python developer tools including uv (package manager), Ruff (linter), and ty (type checker), all written in Rust for 10-100x speed improvements over alternatives. Acquired by OpenAI in March 2026. | New York, United States | Acquired | $17M |
| 120 | BlueFlag Security | Developer-centric cybersecurity platform providing just-in-time permissions and identity security for software development teams. Secures developer identities and access across CI/CD pipelines and cloud infrastructure. | Tel Aviv, Israel | Private | $17M |
| 121 | Rootly | AI-native incident management platform that integrates into Slack and Microsoft Teams, helping engineering and SRE teams automate manual admin during incidents, run retrospectives, track metrics, and manage status pages. Trusted by NVIDIA, Canva, Figma, Squarespace, and Grammarly. Y Combinator S21. | San Francisco, United States | Private | $15M |
| 122 | Arweave | Arweave is a decentralized permanent data storage network that uses a blockchain-based structure called a "blockweave" to store data indefinitely. The protocol enables a "permaweb" where websites, applications, and files are preserved permanently without risk of deletion or censorship. | London, United Kingdom | Private | $13M |
| 123 | Heroku | Cloud platform as a service (PaaS) that enables developers to build, run, and manage applications entirely in the cloud. One of the first PaaS platforms, originally focused on Ruby on Rails applications. Pioneered the developer-first cloud deployment model. | San Francisco, US | Acquired | $13M |
| 124 | Upstash | Upstash is a serverless data platform that provides managed Redis, Kafka, and QStash services with per-request pricing. The platform targets developers building data-intensive and edge computing applications, scaling to zero when idle and serving over 85,000 developers. | San Jose, United States | Private | $12M |
| 125 | GitPrime | Developer productivity analytics platform that connected to code repositories (GitHub, Bitbucket, GitLab) and transformed commit data into reports and visualizations for engineering leaders. The platform analyzed codebases, ticketing systems, and pull requests to provide visibility into team velocity and bottlenecks. | Durango, United States | Acquired | $12M |
| 126 | Liveblocks | Real-time collaboration infrastructure platform providing APIs, SDKs, and pre-built React components enabling developers to add multiplayer experiences to applications, including collaborative editing, comments, notifications, and presence indicators. | San Francisco, United States | Private | $11M |
| 127 | Paystack | Paystack is a Nigerian fintech company that provides modern payments infrastructure for Africa, enabling businesses to accept payments via credit card, debit card, money transfer, and mobile money through a simple API integration. | Lagos, NG | Acquired | $9M |
| 128 | Apcera | Apcera was a cloud infrastructure company that built a policy-driven container management platform called Continuum, enabling enterprises to deploy, orchestrate, and govern containers and applications across on-premises and cloud-based infrastructure. Founded by Derek Collison (creator of Cloud Foundry at VMware), the company was acquired by Ericsson in 2014 before being wound down as Docker and Kubernetes won the market. | San Francisco, United States | Acquired | $7M |
| 129 | Runscope | Runscope was a SaaS platform for API performance testing, monitoring, and debugging. It helped developers and enterprises ensure their APIs worked correctly through traffic inspection, automated testing, and real-time monitoring. Part of the Heavybit accelerator, Runscope was acquired by CA Technologies in 2017. | San Francisco, United States | Acquired | $7M |
| 130 | Alien | Trust infrastructure for the agentic economy. Verifies users without permanently storing biometric data or requiring government ID, using continuous human verification via social graph activity and probabilistic scoring. AI agents receive Agent ID credentials tied back to human owners. | San Francisco, United States | Private | $7M |
| 131 | Val Town | Social coding platform for writing, running, and deploying serverless TypeScript functions from the browser. Combines a cloud runtime, collaboration features, and a social network for code, enabling developers to build APIs, schedule functions, and persist data without managing infrastructure. | Brooklyn, United States | Private | $7M |
| 132 | Langfuse | Open-source LLM engineering platform for collaboratively developing, monitoring, evaluating, and debugging AI applications. Provides application tracing, prompt management, evaluation pipelines, and analytics. Y Combinator W23 batch. Acquired by ClickHouse in January 2026. | Berlin, Germany | Acquired | $5M |
| 133 | Tiptap | Suite of open-source content editing and real-time collaboration tools for developers. Built on ProseMirror, provides a headless, extensible rich text editor framework used by LinkedIn, GitLab, Axios, Substack, and Anthropic, with over 3 million npm downloads per month. Y Combinator S23. | Berlin, Germany | Private | $3M |
| 134 | Zapier | Workflow automation platform that connects over 7,000 apps, enabling users and businesses to automate repetitive tasks without code. One of the most capital-efficient companies in tech history, reaching a $5B valuation on just $2.7M in primary funding. | San Francisco, US | Private | $3M |