Developer Tools
86 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 | 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 |
| 35 | 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 |
| 36 | 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 |
| 37 | 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 |
| 38 | 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 |
| 39 | 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 |
| 40 | 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 |
| 41 | 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 |
| 42 | 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 |
| 43 | 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 |
| 44 | 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 |
| 45 | 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 |
| 46 | 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 |
| 47 | 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 |
| 48 | 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 |
| 49 | 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 |
| 50 | 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 |
| 51 | 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 |
| 52 | 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 |
| 53 | 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 |
| 54 | 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 |
| 55 | 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 |
| 56 | 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 |
| 57 | 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 |
| 58 | 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 |
| 59 | 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 |
| 60 | 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 |
| 61 | 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 |
| 62 | 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 |
| 63 | 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 |
| 64 | 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 |
| 65 | 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 |
| 66 | 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 |
| 67 | 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 |
| 68 | 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 |
| 69 | 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 |
| 70 | 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 |
| 71 | 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 |
| 72 | 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 |
| 73 | 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 |
| 74 | 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 |
| 75 | 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 |
| 76 | 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 |
| 77 | 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 |
| 78 | 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 |
| 79 | 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 |
| 80 | 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 |
| 81 | 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 |
| 82 | 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 |
| 83 | 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 |
| 84 | 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 |
| 85 | 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 |
| 86 | 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 |