Postman
The most widely used API platform — build, test, and document APIs.
What is Postman?
Postman grew from an HTTP client into a full API platform: collections, environments, automated tests, mock servers, documentation, and team workspaces. It supports REST, GraphQL, gRPC, and WebSockets, and its collection format is a de facto interchange standard.
Our review
4.0Still the most complete API workflow in one tool, and the one your teammates already know. Collections-as-living-docs is genuinely useful for teams. The app has grown heavy, and cloud-synced workspaces raised privacy flags that pushed some users to offline-first alternatives like Bruno.
Pros
- + Complete workflow: client, tests, mocks, docs
- + Ubiquitous — collections are an interchange format
- + Good team collaboration features
Cons
- − Heavyweight app; sync requires an account for most features
- − Free tier limits team features
Reviewed by SeekDeploy Editorial · updated 2026-11-14. Reviews are independent — we don’t accept payment for coverage or ratings.
User reviews
User reviews are coming soon. We’re building a moderated review system so real-world experience — good and bad — can live alongside our editorial take. In the meantime, you can share feedback or flag corrections on GitHub.
Alternatives to Postman
Bruno
API Development & TestingOffline-first, git-friendly API client — collections live in your repo.
Insomnia
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Hoppscotch
API Development & TestingLightweight, open-source API client that runs in your browser.