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Developer tools startup funding 2026: 78 rounds

Coding agents, IDEs, testing, CI, observability and the rest of the software toolchain.

  1. 1nhaler raises $3M, . Developer tools. 1nhaler, a Scotland-based drug delivery device developer, has secured £2.2 million in follow-on funding to progress its novel pop-up cardboard inhaler towards first regulatory approval.
  2. Ares Intelligence raises $3M, . Developer tools. Ares Intelligence, a London-based startup building what it describes as an evidence-based platform for AI transformation, has secured €2.6 million in funding.
  3. Blacksmith Software raises $66M Series C, . Developer tools. Led by Sequoia Capital. Blacksmith Software provides a continuous integration cloud platform for testing and verifying code.
  4. RhymeQ raises $2.2M Pre-seed, . Developer tools. Led by Ground State Ventures. RhymeQ is a quantum computing startup simplifying quantum programming.
  5. Peak Energy raises $108M Series B, . Developer tools. Funding supports Peak as it scales domestic manufacturing and expands its passively cooled sodium-ion platform into data center power infrastructure BURLINGAME, Calif., Oct.
  6. Skyfly raises $10M Seed, . Developer tools. Led by HICO Investment Group. Skyfly Technologies, a British developer of electric and hybrid-electric vertical take-off aircraft, has closed an €8.91 million ($10 million) Seed round.
  7. Mika Games raises $10M, . Developer tools. Led by Flint Capital. Mika Games, a gaminginvestment company founded by Wargaming co-founder Nick Katselapov, has raised$10 million in a funding round led by Flint Capital, with participation fromseveral new and existing i...
  8. Kapta Space raises $24M Series A, . Developer tools. Led by Washington Harbour Partners. Kapta Space Raises $24M Series A, Secures Multiple Classified MTI Contracts
  9. Klarent raises $7.8M Seed, . Developer tools. Led by Mosaic Ventures. Klarent develops an autonomous, agentic software testing platform.
  10. Vinci raises $250M Series B, . Developer tools. Led by Advent, Temasek, Xora. Vinci provides an engineering simulation platform for hardware product designers.
  11. Namespace raises $42M Series B, . Developer tools. Led by Scale Venture Partners. Namespace provides a developer platform for coding, building, and testing environments across operating systems.
  12. Photon raises $4.5M, . Developer tools. Photon helps developers build AI agents that work over messaging platforms.
  13. Island raises $400M Series F, . Developer tools. Island Inc., a startup with a browser optimized for the enterprise market, today announced that it has raised $400 million in late-stage funding.
  14. Raindrop raises a Series A round, . Developer tools. Led by CRV. Monitoring and simulation tools that detect failures in production AI agents.
  15. Factory raises $200M, . Developer tools. Led by Blackstone, Khosla Ventures, Sequoia Capital. Builds Droids, autonomous AI agents that carry out software development tasks.
  16. Temporal raises $550M Series E, . Developer tools. Led by Lightspeed Venture Partners, Wellington Management. Open-source durable execution platform for reliable long-running workflows and AI agents.
  17. DataAgent raises $10M Pre-seed, . Developer tools. Led by MizMaa Ventures, Alicorn Venture Partners. AI system that diagnoses and repairs production faults inside Kubernetes clusters.
  18. Embedd raises $2.7M Pre-seed, . Developer tools. Led by Seedcamp. Generates embedded driver code for chip-to-chip communication in hardware devices.
  19. Hypercubic raises $5.3M Seed, . Developer tools. Led by CIV. AI agents that map legacy COBOL codebases and rewrite them in modern languages.
  20. CodeRabbit raises $143M Series C, . Developer tools. Led by Atomico, Smash Capital. AI code review and change-governance platform for pull requests.
  21. Blacksmith raises $45M Series B, . Developer tools. Led by Peak XV Partners. Code build and testing platform with an AI agent that fixes failed CI checks.
  22. RWX raises $12M Series A, . Developer tools. Led by Hyde Park Venture Partners. Cloud platform for building, testing and validating code, aimed at engineers and AI coding agents.
  23. Groundcover raises $100M Series C, . Developer tools. Led by One Peak. eBPF-based cloud observability platform for infrastructure, applications and AI workloads.
  24. Weave raises $14M Series A, . Developer tools. Led by Standard Capital. Engineering-intelligence platform that measures human and AI code output and the ROI of AI tooling.
  25. Fly.io raises $25M Series D, . Developer tools. Led by Dell Technologies Capital, Intel Capital. Developer cloud that runs applications and AI agents on lightweight VMs close to users.
  26. Meticulous raises $15M Series A, . Developer tools. Led by Chemistry. Automated software testing that simulates user flows to catch regressions, including in AI-written code.
  27. Ollama raises $65M Series B, . Developer tools. Led by Theory Ventures. Open-source tool for running open-weight AI models locally, plus a paid cloud service.
  28. Baz raises $9M Seed, . Developer tools. Led by Battery Ventures, Boldstart Ventures. AI code review platform that catches vulnerabilities during planning and review, before code reaches production.
  29. Sazabi raises $8M Seed, . Developer tools. Led by J2 Ventures, Village Global, Y Combinator. AI-native observability platform that uses agents and logs to detect and resolve production issues.
  30. Cognition raises $1B, . Developer tools. Led by Lux Capital, General Catalyst, 8VC. Builds Devin, an autonomous AI software engineer, and owns the Windsurf editor.
  31. Expo raises $45M Series B, . Developer tools. Expo builds an open source framework and cloud services for creating, shipping and updating React Native apps.
  32. Replit raises $400M Series D, . Developer tools. Led by Georgian. Runs a browser based coding platform with an AI agent that builds and deploys apps.
  33. Temporal raises $300M Series D, . Developer tools. Led by Andreessen Horowitz. Temporal makes an open-source durable execution platform that keeps long-running application and AI agent workflows running reliably through failures.
  34. Render raises $100M Series C, . Developer tools. Led by Georgian. Render is a cloud application platform for deploying web services, databases and background workers.
  35. Daytona raises $24M Series A, . Developer tools. Led by FirstMark Capital. Daytona provides fast, isolated cloud sandboxes that give AI agents their own computer to run code.
  36. Railway raises $100M Series B, . Developer tools. Led by TQ Ventures. Railway is a cloud platform that provisions and deploys apps, databases and services from code with little setup.
  37. Emergent raises $70M Series B, . Developer tools. Led by SoftBank Vision Fund 2, Khosla Ventures. Emergent is a vibe coding platform where AI agents build and deploy full applications from natural language prompts.
  38. Lovable raises $330M Series B, . Developer tools. Led by CapitalG, Menlo Ventures. Lets people build web apps and sites by describing them in plain language to an AI.
  39. Harness raises $200M Series E, . Developer tools. Led by Goldman Sachs. Harness offers an AI powered software delivery platform covering CI/CD, testing, security and cloud cost management.
  40. Raindrop raises $15M Seed, . Developer tools. Led by Lightspeed. Raindrop is a monitoring platform that detects silent failures in production AI agents.
  41. Cursor raises $2.3B Series D, . Developer tools. Makes Cursor, an AI code editor that writes, edits and reviews code with AI agents.
  42. LangChain raises $125M Series B, . Developer tools. Led by IVP. LangChain makes open source frameworks and the LangSmith platform for building, testing and deploying LLM agents.
  43. Vercel raises $300M Series F, . Developer tools. Led by Accel, GIC. Vercel runs a cloud platform for deploying and hosting web apps and AI features, and makes the Next.js framework and v0.
  44. Factory raises $50M Series B, . Developer tools. Led by NEA. Builds Droids, autonomous AI agents that carry out software development tasks.
  45. Emergent raises $23M Series A, . Developer tools. Led by Lightspeed. Emergent is a vibe coding platform where AI agents build and deploy full applications from natural language prompts.
  46. CodeRabbit raises $60M Series B, . Developer tools. Led by Scale Venture Partners. Provides AI code review for pull requests.
  47. Replit raises $250M Series C, . Developer tools. Led by Prysm Capital. Runs a browser based coding platform with an AI agent that builds and deploys apps.
  48. Cognition raises $400M, . Developer tools. Led by Founders Fund. Builds Devin, an autonomous AI software engineer, and owns the Windsurf editor.
  49. Observe raises $156M Series C, . Developer tools. Led by Sutter Hill Ventures. Observe offers an observability platform that stores logs, metrics and traces in a data lake for troubleshooting.
  50. E2B raises $21M Series A, . Developer tools. Led by Insight Partners. E2B provides secure cloud sandboxes where AI agents can run code.
  51. Lovable raises $200M Series A, . Developer tools. Led by Accel. Lets people build web apps and sites by describing them in plain language to an AI.
  52. Browserbase raises $40M Series B, . Developer tools. Led by Notable Capital. Browserbase runs headless browsers in the cloud so AI agents and automations can use the web.
  53. Linear raises $82M Series C, . Developer tools. Led by Accel. Linear makes issue tracking and project planning software for product and engineering teams.
  54. Cursor raises $900M Series C, . Developer tools. Makes Cursor, an AI code editor that writes, edits and reviews code with AI agents.
  55. Statsig raises $100M Series C, . Developer tools. Led by ICONIQ Growth. Statsig provides feature flags, experimentation and product analytics for software teams.
  56. Groundcover raises $35M Series B, . Developer tools. Led by Zeev Ventures. Groundcover provides eBPF based observability that runs inside the customer's own cloud account.
  57. Temporal raises $146M Series C, . Developer tools. Led by Tiger Global. Temporal makes an open-source durable execution platform that keeps long-running application and AI agent workflows running reliably through failures.
  58. Graphite raises $52M Series B, . Developer tools. Led by Accel. Makes code review tooling for stacked pull requests plus an AI review agent.
  59. Cognition raises an undisclosed round, . Developer tools. Led by 8VC. Builds Devin, an autonomous AI software engineer, and owns the Windsurf editor.
  60. Continue raises $3M Seed, . Developer tools. Led by Heavybit. Continue makes an open source platform for building and sharing custom AI coding assistants.
  61. Lovable raises $15M, . Developer tools. Led by Creandum. Lets people build web apps and sites by describing them in plain language to an AI.
  62. Render raises $80M Series C, . Developer tools. Led by Georgian. Render is a cloud application platform for deploying web services, databases and background workers.
  63. Cursor raises $105M Series B, . Developer tools. Led by Thrive Capital. Makes Cursor, an AI code editor that writes, edits and reviews code with AI agents.
  64. Observe raises $145M Series B, . Developer tools. Led by Evolution Equity Partners, Madrona Ventures. Observe offers an observability platform that stores logs, metrics and traces in a data lake for troubleshooting.
  65. Supermaven raises $12M, . Developer tools. Led by Bessemer Venture Partners. Made a fast AI code completion tool with a very long context window.
  66. Windsurf raises $150M Series C, . Developer tools. Led by General Catalyst. Built the Codeium AI code completion tools and the Windsurf AI code editor.
  67. Cursor raises $60M Series A, . Developer tools. Makes Cursor, an AI code editor that writes, edits and reviews code with AI agents.
  68. Grafana Labs raises $270M Series D, . Developer tools. Led by Lightspeed Venture Partners. Grafana Labs builds the open source Grafana observability stack and a hosted cloud for metrics, logs and traces.
  69. CodeRabbit raises $16M Series A, . Developer tools. Led by CRV. Provides AI code review for pull requests.
  70. Factory raises $15M Series A, . Developer tools. Led by Sequoia Capital. Factory builds autonomous AI coding agents, called Droids, for software teams.
  71. Daytona raises $5M Seed, . Developer tools. Daytona provides fast, isolated cloud sandboxes that give AI agents their own computer to run code.
  72. Vercel raises $250M Series E, . Developer tools. Vercel runs a cloud platform for deploying and hosting web apps and AI features, and makes the Next.js framework and v0.
  73. Harness raises $150M Debt, . Developer tools. Harness offers an AI powered software delivery platform covering CI/CD, testing, security and cloud cost management.
  74. Cognition raises $175M, . Developer tools. Led by Founders Fund. Builds Devin, an autonomous AI software engineer, and owns the Windsurf editor.
  75. Augment Code raises $227M Series B, . Developer tools. Makes an AI coding assistant that understands large enterprise codebases.
  76. Observe raises $115M Series B, . Developer tools. Led by Sutter Hill Ventures. Observe offers an observability platform that stores logs, metrics and traces in a data lake for troubleshooting.
  77. Cognition raises $21M Series A, . Developer tools. Led by Founders Fund. Builds Devin, an autonomous AI software engineer, and owns the Windsurf editor.
  78. Meticulous raises $4M Seed, . Developer tools. Meticulous automatically generates and maintains end to end UI tests that catch visual and logic regressions before code ships.