Kong/insomnia
The open-source, cross-platform API client for GraphQL, REST, WebSockets, SSE and gRPC. With Cloud, Local and Git storage.
Open source alternative to Postman
Insomnia is an open source TypeScript project by Kong, created in April 2016. It has 40,070 stars and 2,386 forks on GitHub and is released under the Apache-2.0 license. Its most recent commit was on Oct 21, 2026, and it has 745 open issues. Its GitHub topics include electron-app, rest-api, api-client, and curl.
40,070 stars today
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