Insomnium
6.7#27 in api clientsFree planFree planLinuxmacOSSelf-hostedWindows
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| Fact | Insomnium | Postman |
|---|---|---|
| Free plan | Yes | Yes |
| GraphQL support | Yes | Yes |
| What it does | Insomnium is a local API client for testing GraphQL, REST, WebSockets, server-sent events, and gRPC. | Postman is a unified platform for designing, testing, distributing, documenting, and monitoring APIs. |
Insomnium suits developers who need a desktop client for API testing in development or production. It may also suit users who want local operation and optional programmatic access to saved requests.
Postman suits developers and teams that design, test, document, or monitor APIs. Its Free plan includes core API tools, while Enterprise features address advanced collaboration, security, and governance needs.