APIs & backends

64 repos

  1. supabase by supabase, 115k stars. Postgres platform with auth, realtime and APIs for web and mobile apps
  2. fastapi by fastapi, 105k stars. Python web framework for building APIs with type hints and OpenAPI docs
  3. gin by gin-gonic, 90k stars. Fast HTTP web framework for Go
  4. hoppscotch by hoppscotch, 81k stars. Open source API client for web, desktop and CLI, self-hostable
  5. strapi by strapi, 73k stars. Open-source headless CMS with a customizable admin panel and API
  6. bruno by usebruno, 48k stars. Git-friendly desktop API client, a lightweight alternative to Postman
  7. mitmproxy by mitmproxy, 47k stars. Interactive intercepting proxy for inspecting and modifying TLS and HTTP traffic
  8. it-tools by CorentinTh, 41k stars. Collection of polished online tools for developers, such as converters and formatters
  9. medusa by medusajs, 37k stars. Headless commerce backend in Node.js for building online stores
  10. swagger-ui by swagger-api, 29k stars. HTML, JS and CSS assets that render interactive docs from OpenAPI specs
  11. react-admin by marmelab, 27k stars. React framework for admin apps on top of REST or GraphQL APIs, using Material UI
  12. openapi-generator by OpenAPITools, 27k stars. Generates API clients, server stubs and docs from an OpenAPI spec
  13. winston by winstonjs, 25k stars. General purpose logging library for JavaScript with pluggable transports
  14. parse-server by parse-community, 21k stars. Open-source Node.js backend server with MongoDB or Postgres storage
  15. hurl by Orange-OpenSource, 19k stars. Runs and tests HTTP requests written in a plain text format
  16. iii by iii-hq, 19k stars. Runtime for composing and observing backend services in real time
  17. apprise by caronc, 18k stars. Python library that sends notifications to many services through one API
  18. scalar by scalar, 16k stars. Open-source API client and documentation tool built on OpenAPI specs
  19. encore by encoredev, 13k stars. Backend framework that provisions infrastructure from local dev to cloud
  20. fastapi_mcp by tadata-org, 12k stars. Library that exposes FastAPI routes as MCP tools with auth support
  21. check-if-email-exists by reacherhq, 10k stars. Checks whether an email address exists without sending mail, with an HTTP API
  22. no-as-a-service by hotheadhacker, 8.0k stars. API that returns random rejection excuses
  23. ws by gobwas, 6.5k stars. Small, fast WebSocket library for Go
  24. open-connector by oomol-lab, 6.2k stars. Auth gateway exposing 1500+ SaaS providers through SDK, CLI, MCP, and HTTP
  25. graphql-java by graphql-java, 6.2k stars. Java implementation of the GraphQL specification for servers
  26. postman-app-support by postmanlabs, 6.0k stars. Support repository for the Postman API client app, issues and feedback
  27. tabularis by TabularisDB, 5.5k stars. Desktop SQL client with ER diagrams, many database drivers and a built-in MCP server
  28. useSend by usesend, 4.8k stars. Open source email sending platform with an SES dashboard, alternative to Resend
  29. json-formatter by callumlocke, 4.1k stars. Pretty-prints JSON so it is easy to read
  30. lunar by lunarphp, 3.8k stars. Headless e-commerce package for Laravel with a Filament admin panel
  31. FindMy.py by malmeloo, 3.4k stars. Python client for querying Apple's Find My network for tracker locations
  32. http4k by http4k, 2.8k stars. Kotlin toolkit for serving, calling and testing HTTP services
  33. hocuspocus by ueberdosis, 2.7k stars. WebSocket server backend for Yjs real-time collaborative editing
  34. solid_queue by rails, 2.5k stars. Database-backed background job backend for Active Job in Rails
  35. blok by deskree-inc, 2.3k stars. Framework for building modular backend apps from nanoservices
  36. vmodal_sdk_flutter by v-modal, 2.2k stars. Flutter SDK for visual search across video and image content
  37. django-bolt by dj-bolt, 1.8k stars. Django-compatible API framework with a Rust HTTP server and msgspec
  38. httpx2 by pydantic, 1.7k stars. Next-generation HTTP client library for Python
  39. mcptools by f, 1.6k stars. CLI for calling tools on MCP servers over stdio and HTTP
  40. devtools-protocol by ChromeDevTools, 1.6k stars. Protocol definitions for controlling and inspecting Chrome

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