Insomnia is a Windows tool for developing APIs. There is support for multiple connection protocols, including HTTP, REST, GraphQL, gRCP, WebSockets and SSE. You are able to test and debug new projects across different communication paradigms. Please note that the free version of Insomnia has limited capabilities.

API development

The framework contains an intuitive request builder that simplifies the process of crafting complex queries. Developers can easily define headers, parameters and body contents. Additionally, there are instruments for viewing and processing incoming responses.

Like in Cisco Prime, you are able to monitor status codes and error messages in real time. This functionality is helpful for fast and effective troubleshooting.

Communication

Insomnia supports various common protocols like HTTP and REST. Users can test API performance in diverse conditions to ensure full compatibility.

Tools for debugging internal interface components by simulating active data exchange are provided. You are able to get immediate feedback on API interactions and quickly make corresponding changes to the codebase.

Features

free to download and use;
lets you develop custom application programming interfaces;
it is possible to test and debug new projects by simulating API interactions;
there is support for multiple common communication protocols;
compatible with modern versions of Windows.