Best open-source API tools for the web, enterprise

Open-source API clients and testing tools.

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AI & LLM tooling20Chat UIs3Agents & frameworks12Local inference1RAG & vector DBs2Coding assistants2Evals & observability1Agent skills0MCP servers0Developer tools20Web frameworks9Databases & backends5Editors & IDEs1API tools1Self-hosted apps17Notes & docs4Automation7Data & analytics9Infra & DevOps5Security & identity3Communication6Media & photos0Design & creative5

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Web1Docker / self-host6Desktop3Mobile0CLI2Library / SDK13Extension / plugin0

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Has live demo1Commit in last 90 days1

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Open-source API development ecosystemPersonalEnterpriseAPI toolsWebDocker / self-hostDesktop★ 81kMITcommit 3 days agolive demo

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