Insomnia

★ 4/5 · Testing

Insomnia is a testing tool for quality assurance, automation, observability, or software reliability.

Pros

Multi-protocol support (GraphQL, REST, WebSockets, SSE, gRPC) with intuitive UI
cross-platform desktop application
flexible storage (Cloud, Local, Git)
excellent developer experience

Cons

Electron-based application increases disk/memory footprint
Cloud features require paid subscription
less advanced scripting capabilities than Postman
setup complexity for Teams

Cost

Free (MIT); Cloud subscription from $10/user/month

Verdict

Ideal for developers and teams requiring modern, multi-protocol API testing with excellent UX and built-in GraphQL/gRPC support.