1
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
2

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
3

Native macOS API client with code generation, environments, and team sync.

Paid from $49.99 one-time macOS developers wanting a native API client
Native macOS Code Gen Dynamic Values Extensions
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

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