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Postman Alternatives for Firefox

Postman is not available for Firefox but there are a few alternatives with similar functionality. The best Firefox alternative is RESTer, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 50 alternatives to Postman and four of them are available for Firefox so hopefully you can find a suitable replacement. Other interesting Firefox alternatives to Postman are HttpRequester, Requestly and Resting.

Postman alternatives are mainly HTTP Clients but may also be API Clients or Uptime Monitor Services. Filter by these if you want a narrower list of alternatives or looking for a specific functionality of Postman.
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  • FreemiumProprietary
  • Mac
  • Windows
  • Linux
  • Online
  • Chrome OS
  • Google Chrome

Postman is a tool that facilitates the development and use of APIs. Postman provides all the functionality needed to create...

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  1. RESTer icon

    RESTer

    • FreeOpen Source
    • Mac
    • Windows
    • Linux
    • Google Chrome
    • Firefox

    A REST client for almost any web service (Firefox and Chrome extension).

    Screenshot
    RESTer vs Postman opinions
    Almost everyone thinks RESTer is a great alternative to Postman.

    Amazing interface, integrates very well in Firefox, prettyfies the code… What else?

    Positive comment ago
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  2. HttpRequester icon

    HttpRequester

    • FreeOpen Source
    • Mac
    • Windows
    • Linux
    • Firefox

    HttpRequester is a tool for Firefox for easily making HTTP requests (GET/PUT/POST/DELETE), viewing the responses, and keeping a history of transactions.

    Discontinued

    Doesn't support Firefox WebExtensions:https://github.com/tommut/HttpRequester/issues/43Also latest commit d62a6ea on Mar 12, 2017.

    Screenshot
    Almost everyone thinks HttpRequester is a great alternative to Postman.


  3. Requestly icon

    Requestly

    • FreemiumProprietary
    • Mac
    • Windows
    • Linux
    • Online
    • Microsoft Edge
    • Google Chrome
    • Software as a Service (SaaS)
    • Selenium
    • Firefox

    Requestly is a lightweight proxy available as a browser extension & desktop app to intercept & modify network requests. Using Requestly you can Modify Headers, Redirect Url, Mock API response, Delay/Throttle requests, etc.

    Modify HTTP Headers
  4. Resting icon

    Resting

    • FreeOpen Source
    • Mac
    • Windows
    • Linux
    • Google Chrome
    • Chromium
    • Firefox

    browser web-extension to test and analyze HTTP requests.

    An HTTP request
Showing 4 of 4 alternatives