oatpp/oatpp

Health v2 · maintenance only

Adoption not part of the score

8646 stars · 1359 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

Oat++ is a light, zero-dependency C++ web framework for building highly scalable and resource-efficient web applications and REST APIs. It includes an ORM, WebSocket support, DTO object mapping, dependency injection, and automatic Swagger-UI/OpenAPI documentation.

Use cases

• build rest apis in c++
• create a high-performance web server in cpp
• build microservices in c++
• serve websockets with millions of concurrent connections
• run a web api on embedded or iot devices
• access sqlite or postgresql via an orm in c++
• auto-generate swagger docs for a c++ api

When to choose

• you need a production-grade C++ web framework with zero external dependencies
• you need extreme scalability and a small memory footprint (IoT, robotics, embedded)
• you want built-in ORM, DTO serialization, and Swagger-UI in one framework
• you need to handle very large numbers of concurrent WebSocket connections

When to avoid

• your project is not in C++
• you prefer a minimal HTTP library and will assemble your own stack
• you need a framework with a very large ecosystem and frequent releases
• you want a batteries-included framework with first-party database drivers for every database

Facets

framework · maturity active

web-framework http-server orm websocket serialization api-framework routing middleware web-development backend apis iot microservices cpp cross-platform windows embedded iot zero-dependency rest-api swagger-ui openapi high-performance object-mapping dependency-injection async-api linux macos

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