* [NpgsqlRest v3.11.0](https://github.com/NpgsqlRest/NpgsqlRest) – Turns a PostgreSQL database into a production-ready REST API server with TypeScript code generation and end-to-end type safety.

* [Hoppscotch 2026.2.0](https://github.com/hoppscotch/hoppscotch) – Lightweight API development ecosystem with real-time request sending and customizable theming.

* [OKAPI v0.5.0](https://github.com/jkaninda/okapi) – Minimalist Go web framework with OpenAPI 3 and Swagger UI, fast routing, automatic request binding, and built-in auth.

* [ID-based RAG FastAPI v0.7.1](https://github.com/danny-avila/rag_api) – Integration of Langchain with FastAPI for document indexing and retrieval using PostgreSQL/pgvector.

* [wiretap v0.5.5](https://github.com/pb33f/wiretap) – Local and pipeline tool that sniffs API requests and responses to detect OpenAPI contract violations.

* [OasRails oas_rails/v1.3.4](https://github.com/a-chacon/oas_rails) – Rails engine for generating automatic interactive documentation for APIs using OpenAPI Specification.