Insomnia vs Postman

What Insomnia is

Insomnia is an API client for designing, testing and debugging requests, with an interface less crowded than its main rival. It stays close to the request: design a spec, send calls, inspect the response, without the workspace machinery larger clients add. That simplicity is also the limit, since team collaboration and mock servers are thinner than the market leader.

What Postman is

Postman is the most popular API platform globally, managing every stage of development. Once just a test tool, it now covers API design, documentation, and 'mock' server creation. It ensures flawless communication between frontend and backend. You can group requests into collections, share them with team members, and run automated tests on the cloud.

What Insomnia is built to do

Request workspace

Organises HTTP and GraphQL requests into collections with environments.

OpenAPI design

Edits and lints a specification alongside the requests it describes.

Environment variables

Swaps base URLs and credentials between local, staging and production.

What Postman is built to do

API Collections

Organize your requests by project and share them collaboratively.

Environments

Switch between Local, Staging, and Production setups with one single click.

Automated Testing

Integrate automated API tests into your CI/CD pipelines via Newman.

API Network

Discover and test thousands of public APIs from across the world in seconds.

Choose Insomnia if

• Developers who want to test APIs without a heavy platform.

Choose Postman if

• Backend Developers, QA Engineers, and Frontend Coders.

Insomnia: pros & cons

• Clean interface that stays out of the way
• Supports GraphQL and gRPC as first class
• Open-source core
• Smaller ecosystem than Postman
• Team features require a paid plan
• Account requirement irritates some users

Postman: pros & cons

• Universal Standard: The most widely accepted and used API tool in the industry.
• Scripting Power: Write automated tests for every API request using JavaScript.
• Documentation: Transform your collections into stylish API docs with one click.
• Mock Servers: Allow frontends to keep working even before the backend is ready.
• Resource Usage: The desktop app can consume quite a bit of RAM during heavy work.
• UI Bloat: For those just wanting to send a simple request, the UI can be overwhelming.
• Cloud Reliance: Some collab features require data to be held on Postman's servers.