2 Free & Open-Source Postman Alternatives
Postman's free tier limits team collaboration and monthly API call volume, and the desktop app has grown heavier over the years. Both alternatives here are considerably lighter-weight, with one running entirely in the browser.
The best Postman alternatives
Hoppscotch
Our top pickOpen sourceHostedA fast, open-source API client that runs entirely in the browser.
Hoppscotch strips API testing down to a lightweight, browser-based tool with none of Postman's desktop-app overhead — genuinely open-source and free with no artificial collaboration limits.
- REST, GraphQL, and WebSocket testing
- Runs in-browser, no install required
- Collections and environment variables
- Self-hosted or Hoppscotch's free hosted app
Insomnia
Open sourceDesktop appA desktop API client with a cleaner interface than Postman's.
Insomnia is a closer match to Postman's desktop-app workflow — collections, environments, a request builder — for teams that prefer a native app to a browser tab, with its core client free and open-source.
- REST, GraphQL, and gRPC support
- Environment variables and request chaining
- Code generation for common languages
- Free desktop app; core is open-source
Licensing and pricing models change over time — confirm current terms on each project's own site before making a procurement or compliance decision.
Frequently asked questions
Which is the better free Postman alternative?
Hoppscotch if you'd rather not install anything — it runs entirely in the browser and is fully open-source. Insomnia if you prefer a native desktop app closer to Postman's own workflow.
Do these tools support team collaboration like Postman?
Both support shared collections, though neither matches Postman's mature team-workspace features at scale. For a small team, both are genuinely sufficient.
Can I import my existing Postman collections?
Yes — both Hoppscotch and Insomnia can import Postman collection exports directly.
More free alternatives
Not sure which way to go?
A free Growth Audit can help you weigh self-hosting against the tool you already pay for.