Insomnia
The open-source API development platform
Insomnia by Kong is an open-source API client with design, debug, and test capabilities. Supports REST, GraphQL, gRPC, and WebSocket with a clean interface.
Panel Reviews
The Builder
Developer Perspective
“Clean UI, open source, and supports every protocol. The git-based sync is useful for teams.”
The Skeptic
Reality Check
“Lighter than Postman and open source. For most API development needs, it's the right balance of features.”
The Creator
Content & Design
“Functional but the UI isn't remarkable. It gets the job done without inspiring joy.”
Community Sentiment
“Best Postman alternative — open source, no forced account login”
“Switched from Postman after they locked collections behind login, Insomnia just works”
“The plugin ecosystem is surprisingly good for an open source API client”
“Clean UI and GraphQL support out of the box — exactly what we needed”