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Insomnia

Insomnia is a free, open-source developer tool for Windows, macOS and Linux. The open-source, cross-platform API client for GraphQL, REST, WebSockets, SSE and gRPC. It has 40,092 GitHub stars and is released under the Apache-2.0 license, and people use it instead of Postman.

github.com/Kong/insomnia (opens in a new tab)

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About Insomnia

Insomnia is an open-source, cross-platform API client for GraphQL, REST, WebSockets, Server-Sent Events (SSE), gRPC and any other HTTP compatible protocol.

Replaces

Commercial software people commonly use Insomnia instead of.

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FAQ

Insomnia FAQ

Still curious? Email info@appsgit.com.

Is Insomnia free and open source?

Yes. Insomnia's source code is public on GitHub under the Apache-2.0 license, which is OSI-approved or FSF-free, so you can use, copy and change it for free.

How do I install Insomnia?

Download the installer for Windows, macOS and Linux from its GitHub Releases page (latest: core@13.3.1) or the project website.

Can Insomnia replace Postman?

Insomnia is commonly used as a free alternative to Postman. Features differ, so check that it opens the file formats and covers the workflows you rely on before switching.