StartupAlternatives

Alternatives to Postman

API platform for testing + collaboration.

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Postman website preview
What is Postman?
Postman is an API client and collaboration platform for testing, documenting and sharing HTTP APIs.
What does it do?
Sends requests, saves them into shareable collections with environment variables, and runs scripted tests, mock servers and endpoint monitors. Teams sync collections and publish generated API docs from the same workspace.
Who is it for?
Backend and QA engineers who test APIs daily, and teams that want one shared collection instead of scattered curl commands. Developers who dislike a cloud account and a heavy desktop app look elsewhere.
What are the alternatives to Postman?
Bruno and Yaak keep collections as local files you can commit to Git, Hoppscotch is a light open source web client, and Insomnia and Thunder Client offer a similar desktop or in-editor workflow.

Top alternatives

Smaller, founder-led tools that quietly compete with Postman.

Insomnia website preview

OSS API client.

Open-source client focused on building requests rather than team workspaces.

Bruno website preview

OSS git-friendly API client.

OSS — local files, git-friendly.

Hoppscotch website preview

OSS API testing.

Free OSS web-based API client.

Thunder Client website preview

VS Code API client.

Lives inside VS Code, so requests sit next to the code that calls them.

Yaak website preview

Modern desktop API client.

team — git-friendly desktop.

5 alternatives to Postman (2026) · Startup Alternatives