What is Insomnia?
Insomnia is an open-source desktop application for building, testing and debugging REST, GraphQL, gRPC and WebSocket requests, comparable to Postman. Originally an independent project, it has been maintained by Kong since its 2019 acquisition; the desktop app is free, while Kong sells paid plans for team collaboration and cloud sync on top of the open-source core.
Read the full overview
Sources checked 27 September 2026: official website, documentation, repository, pricing.
InsomniaTesting & QAOpen-source API client for REST, GraphQL and gRPC
Key capabilities
- Request builder: REST, GraphQL, gRPC and WebSocket support in one client.
- Environments and Git sync: version-controllable collections and environment variables.
- Plugins: an extensible plugin system for custom workflows.
Because the core client is open source and free, teams can adopt Insomnia without licensing cost and only pay if they need Kong's hosted team-collaboration features.
“Open-source API client for REST, GraphQL and gRPC”
Technical details
- Access
- See vendor
- Source model
- Open source
- Founded
- 2015
- Pricing model
- Open source
- API
- Available
- Website
- insomnia.rest ↗
- GitHub
- Source repository ↗
What to verify
Start from the users, systems and operating responsibilities the tool needs to support.
- Confirm current features, licensing and support terms.
- Validate deployment, data location and access control.
- Test integrations, exports and recovery workflows.
Reviews of Insomnia
No published reviews yet.
Loading review form…
