Dev tools · alternatives · 2026

24 alternatives to WebSlurp

The Fastest Way to Test API Security Inside Chrome DevTools

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.

1. 1
   OpenAPI DevTools – Chrome extension that generates an API spec▲811

   Effortlessly discover API behaviour with a Chrome extension that automatically generates OpenAPI specifications in real time for any app or website.

   2023 · github.com · its alternatives →

2. 2AC
   A curated list of Chrome DevTools tips and tricks▲212

   Practical guides to browser DevTools and AI-assisted debugging — Chrome, Firefox, Safari and Edge. Panels, shortcuts, performance traces and accessibility.

   2014 · devtoolstips.com · its alternatives →

3. 3
   HTTP Mock – Intercept, debug and mock HTTP(S) with zero setup▲341

   Beautiful, cross-platform & open-source tools for debugging, testing and building with HTTP(S), on Windows, Linux & Mac.

   2019 · httptoolkit.tech · its alternatives →

4. 4
   Simple Scraper▲556

   Turn any website into an API in just a few seconds.

   2019 · simplescraper.io · its alternatives →

5. 5
   LambdaTest Chrome Extension▲191

   Cross browser testing by taking full-page screenshots

   2018 · testmuai.com · its alternatives →

6. 6
   Checkbot for Chrome Beta▲229

   Check the SEO, speed & security of 100s of pages in a click!

   2018 · checkbot.io · its alternatives →

7. 7
   Copycat▲120

   Extension to test web apps without writing a line of code

   2019 · chromewebstore.google.com · its alternatives →

8. 8
   Hurl – Run and test HTTP requests with plain text, curl and Rust▲223

   Hurl, run and test HTTP requests with plain text and curl. Hurl can run fast automated integration tests.

   2021 · hurl.dev · its alternatives →

9. 9
   QTap DevTools – Chrome-style encrypted traffic inspector for Linux▲30

   Hi HN, I'm Tyler Flint. Eight months ago we shared qtap here (https://news.ycombinator.com/item?id=43928118). Today we're releasing DevTools - a browser-based interface that gives you the Chrome Network tab experience for server-side HTTP/S traffic. The problem: You're debugging a production issue. An external dependency is returning errors. Your logs say "request failed" but not what was actually sent. Adding debug logging means redeploying and restarting services - which takes time and often changes the conditions you're trying to debug. tcpdump shows encrypted blobs.…

   Jan 2026 · qpoint.io · its alternatives →

10. 10
    F19n Obtrusive Livetest▲82

    Frontend Performance Analysis Tool for Chrome

    2018 · github.com · its alternatives →

11. 11
    WebTestIt▲101

    A free lightweight IDE optimized for building UI web tests.

    2020 · sencha.com · its alternatives →

12. 12TP
    Test Post/Get endpoints easily from your browser▲57

    2011 · httpposttool.com · its alternatives →

13. 13
    inProxy▲65

    Free Cross-platform Web Debugging and Mocking tool

    2020 · its alternatives →

14. 14
    I built an HTTP client that perfectly mimics Chrome 142▲39

    BoringSSL and nghttp2. Matches JA3N, JA4, and JA4_R fingerprints. Supports HTTP/2, async/await, and works with Cloudflare-protected sites. Not trying to compete with curl_cffi - just a learning project that turned into something functional.

    Nov 2025 · github.com · its alternatives →

15. 15
    DevTools▲18

    Collection of free online tools to help in web development

    2025 · onlinewebdevtools.com · its alternatives →

16. 16
    Mini API Test▲14

    Chrome web store

    2025 · chromewebstore.google.com · its alternatives →

17. 17
    a tool for inspecting HTTP callbacks in realtime▲21

    2013 · webhookinbox.com · its alternatives →

18. 18
    Open-Source Selenium IDE Light Extension for Chrome, Kantu for Chrome▲38

    2017 · chrome.google.com · its alternatives →

19. 19
    A tool for complete WebSocket traffic control▲12

    I built a Chrome extension that acts as a WebSocket proxy, allowing real-time monitoring, message simulation, and traffic interception. Think "Proxyman for WebSockets" but integrated into Chrome DevTools. Key features: Real-time WebSocket monitoring and message capture Send custom messages in both directions (client ↔ server) Block incoming/outgoing messages for testing Background monitoring (captures connections even when DevTools is closed) Why: I was debugging a WebSocket chat app and needed better tools than browser DevTools. Existing solutions required external proxies or were too…

    2025 · websocket-devtools.com · its alternatives →

20. 20
    BrowserTotal: A framework for analyzing browser security posture▲28

    Live extension analysis: Point us at a Chrome/Edge/Firefox extension (store URL or CRX). We spin up a safe sandbox and observe it in real time—permissions use, message passing, storage writes, network calls, remote code loading, and UI injections. Package scanning: Paste an npm/package URL or code. We do quick static + dynamic checks: install/postinstall scripts, obfuscation/eval, exfil endpoints, suspicious APIs, and typosquat/reputation signals. AI explainer: An LLM summarizes the behaviors and risk patterns in plain English (why it’s risky, what to verify,…

    2025 · browsertotal.com · its alternatives →

21. 21
    Modern DevTools▲18

    A video & text based course for Chrome DevTools

    2018 · moderndevtools.com · its alternatives →

22. 22
    WebhookApp▲6

    Free webhook tester & online http inspector

    2025 · its alternatives →

23. 23
    Test API▲7

    Chrome web store

    2025 · chromewebstore.google.com · its alternatives →

24. 24
    Fetch Fast▲9

    A fast and simple alternative to Postman - HTTP requests

    2024 · nexys-system.github.io · its alternatives →

Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →