Postman alternatives
Programs you can use instead of Postman. Free and open-source options come first; every download is from the publisher's official source.
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Hoppscotch
Hoppscotch is an open-source API development ecosystem designed for creating, testing, and debugging APIs.
Shared platforms: Windows
Windows
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Bruno
Bruno is an open-source desktop client designed for exploring and testing APIs.
Shared platforms: Windows, macOS, Linux
WindowsmacOSLinux
Other alternatives not on the site yet: Insomnia