1
Swagger Free Open Source

Open-source API development framework with the OpenAPI specification.

Free API developers wanting standardized API documentation
OpenAPI Spec Code Gen UI Editor
2
Stoplight Free tier

API design, documentation, and governance platform with OpenAPI support.

Free for 1 project · Free API teams wanting design-first API development
API Design Mock Servers Style Guides Docs
3

Lightweight REST API client built into VS Code with collections and environments.

Free VS Code users wanting a lightweight API client
VS Code Extension Collections CLI Git Sync
4
Apidog Free tier

All-in-one platform for API design, debugging, testing, documentation, and mocking.

Free for 3 users · Free API teams wanting an all-in-one API development platform
API Design Debugging Mock Server Automation

Quick comparison: Paw (RapidAPI) vs Swagger

Feature Paw (RapidAPI) Swagger
Starting price $49.99 one-time Free

See full Paw (RapidAPI) vs Swagger comparison →

Paw (RapidAPI) comparisons

More API Development tools

See all API Development tools →

Explore more