Developer tools Chrome extensions

Tools for developers: inspectors, API clients, formatters, debuggers and terminals. 5,956 live extensions carry the topic.

Tags come from each listing's name, category and description, read in English: a listing written in another language is tagged only where it uses the English words.

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  1. Requestly: Intercept & Modify HTTP Requests↗

    by RQ Labs India Privated Limited · updated 2026-09-30

    Intercept & modify HTTP(S) traffic: redirect URLs, modify headers, inject scripts, mock REST & GraphQL APIs, and more.

    Productivity ★ Featured Extensive access v26.9.29
    Users 300,000 +0 wk
    Rating 4.7 1,824 ratings
    Ratings · week +0.3% weekly avg over 13 days

  2. Channel Blocker↗

    by timemachine.development · updated 2024-08-04

    Allows you to block YouTube™ videos and comments by blacklisting users and/or by using regular expressions.

    Lifestyle ★ Featured Limited access v3.0.5
    Users 100,000 +0 wk
    Rating 2.7 826 ratings
    Ratings · week +0.1% weekly avg over 13 days

  3. daily.dev | Where developers discover what's next↗

    by Daily Dev Ltd. · updated 2026-11-02

    Developer news, personalized to your stack, in every new tab. Join 400,000+ developers. Free and open source.

    Productivity ★ Featured Limited access v3.47.18
    Users 400,000 +0 wk
    Rating 4.9 2,873 ratings
    Ratings · week +0.1% weekly avg over 13 days

  4. User Agent Switcher↗

    by Web User-Agent · updated 2026-09-14

    Simplest way to switch between user-agents in your browser! Spoof user agent strings.

    Productivity ★ Featured Broad access v1.1.20
    Users 100,000 +0 wk
    Rating 3.8 1,167 ratings
    Ratings · week +0.1% weekly avg over 13 days

  5. React Developer Tools↗

    by React Foundation · updated 2026-09-11

    Adds React debugging tools to the Chrome Developer Tools. Created from revision 1d34f91dfd.

    Productivity ★ Featured Broad access v8.0.0
    Users 5,000,000 +0 wk
    Rating 3.5 1,646 ratings
    Ratings · week +0.1% weekly avg over 13 days

  6. Vue.js devtools↗

    updated 2025-06-23

    DevTools browser extension for Vue.js

    Productivity Broad access v7.7.7
    Users 1,000,000 +0 wk
    Rating 2.1 2,166 ratings
    Ratings · week +0.0% weekly avg over 13 days

  7. JSON Formatter↗

    updated 2026-05-16

    Makes JSON easy to read

    Productivity ★ Featured Broad access v0.10.2
    Users 2,000,000 +0 wk
    Rating 1.5 2,086 ratings
    Ratings · week 0.0% weekly avg over 13 days

  8. Web Developer↗

    updated 2024-06-29

    Adds a toolbar button with various web developer tools.

    Productivity Extensive access v3.0.1
    Users 1,000,000 +0 wk
    Rating 4.3 2,833 ratings
    Ratings · week 0.0% weekly avg over 13 days

  9. Octotree - GitHub code tree↗

    updated 2026-10-04

    GitHub on steroids

    Productivity Limited access v9.3.2
    Users 200,000 +0 wk
    Rating 4.5 1,137 ratings
    Ratings · week 0.0% weekly avg over 13 days

  10. Boomerang - SOAP & REST Client↗

    updated 2025-09-27

    Seamlessly integrate and test SOAP & REST services.

    Productivity ★ Featured Broad access v10.4.0
    Users 90,000 +0 wk
    Rating 4.6 1,039 ratings
    Ratings · week 0.0% weekly avg over 13 days