Insomnia REST Client Overview
Insomnia is an open-source API client for designing, debugging, and testing APIs, available for Windows, macOS, and Linux. It provides a clean interface for composing HTTP and GraphQL requests, organizing them into workspaces, managing environment variables for different deployment targets, and inspecting responses in detail. It also supports API design with OpenAPI specifications and includes request chaining and authentication helpers. It is a common lighter-weight alternative to other API clients for developers who prefer a focused tool. Plugins extend it further, response timing and headers are shown for each request, and code generation produces client snippets in many languages. The offline installer is the full setup and installs without a network connection, though calling remote APIs requires connectivity. You can reach the official Insomnia REST Client download from Insomnia Rest via the link on this page.
