Insomnia is a powerful subscription-based API testing tool designed for developers to design, debug, and manage APIs effectively. It supports both REST and GraphQL, providing a user-friendly desktop client that allows users to create and group requests, manage environment variables, and generate code snippets with ease. The tool's collaborative features enable teams to work together seamlessly, making it suitable for various organization types, including small businesses, nonprofits, and enterprises.

The software also offers robust functionalities such as detailed request and response inspections, timeline views, and status code tracking, ensuring comprehensive API management. Users can create and manage OpenAPI specifications within a single editor, sync their designs with source control like GitHub and GitLab, and deploy directly to API gateways, including Kong. With pricing starting at $5 per month, Insomnia provides an affordable solution for developers looking to enhance their API workflows.