Best Open Source Alternatives to Postman

Compare the best free and open-source alternatives to Postman — self-hosted and desktop replacements you fully control, ranked by GitHub stars, license and platform support.

Curated by open-source.store · Updated August 2026 · 4 alternatives

Postman

Proprietary SaaS

PricingFreemium

Platformsmacos, windows, linux, web

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Postman alternatives compared

Open-source alternatives to Postman, compared by stars, license and platform
Tool		License	Platforms	Self-hosted
Hoppscotch	79,941	MIT	WebDocker	Yes	Jul 2026	Visit
Bruno	46,065	MIT	macOSWindowsLinux	No	Jul 2026	Visit
Firecamp	2,602	MIT	macOSWindowsLinuxWeb	No	Mar 2026	Visit
Cartero	1,027	GPL-3.0	Linux	No	Jun 2026	Visit