Express
OpenJS Foundation · Web frameworks & UI
Minimal, unopinionated web framework for Node.js with routing and middleware, the long-standing default for HTTP servers in the Node ecosystem
MITOpen sourceFreeLocalSelf-hostedNov 2, 2026
3 tools
OpenJS Foundation · Web frameworks & UI
Minimal, unopinionated web framework for Node.js with routing and middleware, the long-standing default for HTTP servers in the Node ecosystem
Sebastián Ramírez (tiangolo) and FastAPI contributors · API development & tooling
Python web framework for building HTTP APIs from type-annotated functions, with automatic validation through Pydantic and generated OpenAPI documentation
Pydantic Services Inc. · Data quality & validation
Python data-validation library using type hints to parse, validate and serialize models, with a Rust core; the schema layer behind FastAPI and many LLM SDKs
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