Kong Insomnia vs. Postman

Build APIs that work. Deliver high quality APIs through standards and collaboration with the Insomnia API development platform. Open Source API Client There is a reason developers love Insomnia. With our streamlined API client, you can quickly and easily send HTTP, REST, gRPC, GraphQL, Websockets, SOAP, and SSE requests directly within Insomnia. Native API design and mocking Build consistently reliable APIs with Insomnia. Validate OpenAPI specs through real-time linting and simulate functionality using secure mock servers — locally or in the cloud.

Postman is the world’s leading API platform, used by more than 40 million developers and 500,000 organizations to build, test, and manage APIs at scale. With Postman, teams collaborate efficiently across the entire API lifecycle, including design, development, testing, security, documentation, and governance. The platform helps ensure consistency, quality, and enterprise-grade control. Postman also offers Agent Mode (beta), built on AWS Bedrock and trained with AWS SageMaker.