Open-source API development ecosystem for building, sending and testing HTTP, GraphQL, WebSocket and other API requests, offered as web, desktop and CLI tools.
80.6K6.2KTypeScriptMITUpdated 7 days ago
4 alternatives
Best open-source alternatives to Postman (2026)
Looking for a free, open-source alternative to Postman? These 4 projects can replace it. Each one is reviewed by a human and explained in plain words, so you can compare stars, license and maintenance at a glance.
Quick comparison
| Project | Stars | License | Last commit |
|---|---|---|---|
| hoppscotch/hoppscotch | ★ 80.6K | MIT | 7 days ago |
| swagger-api/swagger-ui | ★ 29K | Apache-2.0 | 2 days ago |
| unkn0wn-root/resterm | ★ 2K | Apache-2.0 | yesterday |
| tetiva-app/client | ★ 232 | MIT | 3 days ago |
Swagger UI generates interactive API documentation in the browser from an OpenAPI specification file.
29K9.3KJavaScriptApache-2.0Updated 2 days ago
A terminal API client for HTTP, GraphQL, gRPC and WebSocket that keeps requests as plain .http files you can version in git.
2K59GoApache-2.0Updated yesterday
A local-first desktop API client for HTTP, gRPC, GraphQL and WebSocket, built with Wails 3 and Vue 3.
2320GoMITUpdated 3 days ago
FAQ
- Is there a free, open-source alternative to Postman?
- Yes. The most popular open-source alternatives to Postman on Repolode are hoppscotch, swagger-ui, resterm.
- Which Postman alternative should I choose?
- hoppscotch has the most GitHub stars and is released under MIT. Compare the license and last commit of each option in the table above before choosing.