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Postman

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.

5 products on AppBoard are listed as alternatives to Postman, ranked by community engagement.

Mostly Developer Tools, AI and Cybersecurity & Privacy.

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  1. 01API Interceptor, Mocker and Tester
    API Interceptor, Mocker and Testerchromewebstore.google.com
    Intercept modify and mock HTTP requests with ease
    Developer ToolsFree
    2 PBSPBS (Points-Based Score) — a product's ranking score. It blends recent upvotes, saves, follows, ratings and real click-throughs with the reputation invested in the product, which decays like an upvote. Recent activity counts for more and scores fade as a product goes dormant, and no single signal can dominate. Higher PBS ranks higher on the leaderboard.
    Upvote
  2. 02SLOPDROP
    SLOPDROPslopdrop.net
    Send AI generated postcards through USPS
    AIOne-time Purchase
    2 PBSPBS (Points-Based Score) — a product's ranking score. It blends recent upvotes, saves, follows, ratings and real click-throughs with the reputation invested in the product, which decays like an upvote. Recent activity counts for more and scores fade as a product goes dormant, and no single signal can dominate. Higher PBS ranks higher on the leaderboard.
    Upvote
  3. 03dotMock (https://mock.new)
    dotMock (https://mock.new)dotmock.com
    Spin up realistic mock APIs in seconds so you can build, tes
    Developer Tools
    1 PBSPBS (Points-Based Score) — a product's ranking score. It blends recent upvotes, saves, follows, ratings and real click-throughs with the reputation invested in the product, which decays like an upvote. Recent activity counts for more and scores fade as a product goes dormant, and no single signal can dominate. Higher PBS ranks higher on the leaderboard.
    Upvote
  4. 04Lium
    LiumVerifiedapp.lium.ai
    Lium is an AI platform that makes complex data work simple
    Automation & Workflow
    Upvote
  5. 05CertLens
    CertLenscertlens.navsatech.dev
    Diagnose TLS certificate trust issues instantly
    Cybersecurity & PrivacyFree
    Upvote

Postman alternatives: common questions

What can I use instead of Postman?
AppBoard lists 5 alternatives to Postman, mostly Developer Tools, AI and Cybersecurity & Privacy tools. The most engaged right now are API Interceptor, Mocker and Tester, SLOPDROP, dotMock (https://mock.new) and Lium.
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. 2 of the alternatives listed here offer a free or freemium plan, including API Interceptor, Mocker and Tester and CertLens.
How are these Postman alternatives ranked?
By 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.

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