Best Postman Alternatives in 2026
Postman is a platform for building, testing, and documenting APIs, widely used by development teams to design workflows and automate testing. Developers seek alternatives when they need lighter-weight tools for specific tasks like request mocking or certificate validation rather than an all-in-one suite, or when they prefer solutions that do not require login or cloud synchronization. The main trade-off is between comprehensive integrated workflows and specialized, focused tools optimized for individual steps in API development.
7 products on AppBoard.pro are listed as alternatives to Postman: competitors and similar tools, ranked by community engagement.
Mostly Developer Tools, AI and Automation & Workflow.
Visit PostmanPostman alternatives and competitors compared
How we picked: Every product here lists itself as an alternative to Postman; the ones that share its category or use case (Developer Tools or API Development) come first, and each group is ranked by community engagement. No product can pay for position.
| Product | Best for | Pricing model | Platforms | Rating |
|---|---|---|---|---|
| API Interceptor, Mocker and Tester | Developers, Frontend Developers | Free | Chrome Extension, Web | Not rated yet |
| dotMock (https://mock.new) | Backend Developers, Developers | Freemium | Web, API | Not rated yet |
| Ripplo | Developers, Software Developers | Freemium | Web, API | Not rated yet |
| DataCaptain – US Stock Market API | Developers, Financial Analysts | Freemium | Web, API | Not rated yet |
| CertLens | Developers, DevOps Engineers | Free | Web, API | Not rated yet |
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API Interceptor, Mocker and Testerchromewebstore.google.comIntercept modify and mock HTTP requests with easeUpvote - 02
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DataCaptain – US Stock Market API datacaptain.inDeveloper-first US Stock & ETF API with historical market daUpvote - 05
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Other products listed as Postman alternatives
These list themselves as alternatives to Postman but sit in a different category or use case, so they may replace only part of it.
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Postman alternatives: common questions
- What are some Postman competitors and similar tools?
- AppBoard.pro lists 7 alternatives to Postman, mostly Developer Tools, AI and Automation & Workflow tools. The most engaged right now are API Interceptor, Mocker and Tester, dotMock (https://mock.new), Ripplo and DataCaptain – US Stock Market API.
- What is the best Postman alternative?
- API Interceptor, Mocker and Tester currently ranks first here: Intercept modify and mock HTTP requests with ease. The order comes from community engagement rather than an editorial verdict, so the right replacement still depends on which part of Postman you are trying to replace.
- Are there free Postman alternatives?
- Yes. 5 of the alternatives listed here offer a free or freemium plan, including API Interceptor, Mocker and Tester, dotMock (https://mock.new), Ripplo and DataCaptain – US Stock Market API.
- How are these Postman alternatives ranked?
- Products that share Postman's category or use case come first. Within each group the order comes from a points-based score that blends recent upvotes, saves, follows, ratings and real click-throughs with the reputation other makers have invested in a product. Recent activity counts for more than old activity, no position in this list is for sale, and the order changes as people vote.