Insomnia - API Testing Tool

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Insomnia

Free TierAPI Testing

Leading Open Source API Development Platform

Founded by: Gregory Schier

You can use Insomnia to test, debug, and design APIs for HTTP, REST, GraphQL, gRPC, SOAP, and WebSockets. It provides a collaborative environment where you can send API requests, examine responses, and create mock servers. The tool supports local testing without an account and includes Git sync for version control. Teams can share API collections and work together on API development with features like AI-powered commit messages and auto-generated mock servers.

Use Cases

Test REST API endpoints during development
Debug GraphQL queries and mutations
Validate API responses in different environments
Share API collections with team members
Create automated API test suites
Mock API responses for frontend development

Standout Features

Test HTTP, REST, GraphQL, gRPC, and WebSocket APIs
Create and run automated test collections
Generate mock servers with natural language
Sync API collections with Git repositories
Work offline without requiring an account
AI-powered commit messages for version control

Tasks it helps with

Send HTTP requests to API endpoints
Examine and validate API response data
Create collections of related API requests
Set up environment variables for different stages
Generate mock servers from API specifications
Write and execute automated API tests

Who is it for?

Software Engineer, Back-End Developer, Full-Stack Developer, Front-End Developer, DevOps Engineer, Product Manager

Overall Web Sentiment

People love it

Time to value

Immediate
Insomnia, API testing, REST API, GraphQL, API development, HTTP requests, API debugging, gRPC testing, SOAP testing, WebSocket testing, API client, API collaboration, mock servers, Git sync, API design
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