Insomnia (opens in new tab)

Insomnia is an open-source, cross-platform API client for GraphQL, REST, WebSockets, Server-sent events (SSE), gRPC and any other HTTP compatible protocol. With Insomnia you can: Debug APIs using the most popular protocols and formats. Design APIs using the native OpenAPI editor and visual preview. Test APIs using native test suites. Mock APIs will be coming soon in November 2023. Build CI/CD pipelines using the native Insomnia CLI for linting and testing. Collaborate with others using the ma...