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



With Insomnia you can:

<ul><li>Debug APIs using the most popular protocols and formats.</li><li>Design APIs using the native OpenAPI editor and visual preview.</li><li>Test APIs using native test suites.</li><li>Mock APIs will be coming soon in November 2023.</li><li>Build CI/CD pipelines using the native Insomnia CLI for linting and testing.</li><li>
Collaborate with others using the many collaboration features to share
your projects.
</li></ul>

And a lot more! The following storage options are supported for your
projects, collections, specs and all other files:

<ul><li>
Local Vault: for local storage of collections, design specs and every
other resource.
</li><li>Cloud Sync: for cloud collaboration, encrypted and free.</li><li>Git Sync: for Git storage of all files using any 3rd party Git repository.</li></ul>