JSFiddle for HTTP requests

In plain words

REST Ninja is a web-based tool for testing and debugging HTTP requests. It allows users to construct, send, and inspect API calls directly in their browser without needing external software. The service is designed for developers who need to quickly experiment with endpoints, view responses, and troubleshoot API integrations. It provides a simple interface for building requests and analyzing results in real-time.

written from the facts on this page · September 2026

• IR
  Intercept.rest – Faster API debugging2018 · ▲89

  Sharing an internal tool that accelerated my development work 10-fold, especially with API debugging. Thought fellow developers here might find it useful. As a developer, I often have trouble reproducing errors at the client end. https://intercept.rest lets me debug and monitor API requests and responses. It is similar to the Network tab in Chrome Developer Tools but works for any API: mobile apps, webhooks, frontend etc. After I shared it with a close circle of friends, they found it incredibly useful and even found new use cases, I never imagined. Been a long time lurker here and…

• 
  HTTP Mock – Intercept, debug and mock HTTP(S) with zero setup2019 · httptoolkit.tech · ▲341

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

• PR
  Page.REST – An API to fetch details from a web page as JSON2017 · page.rest · ▲114
• TP
  Test Post/Get endpoints easily from your browser2011 · httpposttool.com · ▲57
• 
  a tool for inspecting HTTP callbacks in realtime2013 · webhookinbox.com · ▲21
• MS
  Mocktastic – Simple, Offline mock REST APIs for your entire team2018 · mocktastic.com · ▲43

• 
  SimCity, but with Permits▲911

  A free city-building game in your browser. You are the mayor. You know what the city needs. Now get it past the zoning board, the neighbors, the appeals court and the next election.

  Life & fun · 2d ago · permit.petercai.com

• IV
  I've been paying for a rural Tanzanian's education for 10 years▲778

  Life & fun · 14d ago · tanzaniaeducationproject.org

• 
  Bigwords.page – Turn any screen into a sign. The URL is the app▲728

  Turn a phone, tablet or TV into a sign. Type a message and it fills the screen: welcome signs, timers, Wi-Fi passwords and more. No app, no account, free.

  Life & fun · 15d ago · bigwords.page

• 
  Guitoro, a virtual guitar you strum with your keyboard▲573

  Play a free virtual guitar online with your keyboard or by touch. Slow songs down and see every chord, string and strum. Acoustic, classic, electric and bass.

  Life & fun · 9d ago · guitoro.com

• 
  See *almost* any carriers phone settings▲432

  Carrier settings from iPhone, Pixel and Galaxy firmware, decoded and compared: APNs, VoLTE, 5G and Wi-Fi Calling per carrier, and what each build changed.

  Life & fun · 13d ago · carrierexplode.com

• 
  The whole Solar System and every tracked satellite, live in the browser▲407

  Life & fun · 23d ago · space.bl2.net

• 
  Framer Design▲1,008

  Design, code and collaborate. Now all-in-one.

  Dev tools · 2017 · framer.com

• 
  Not Hotdog▲907

  An app that shows if your food is a hotdog 🌭

  Life & fun · 2017

• 
  Ludus Beta▲906

  A limitless presentation tool for designers.

  Work · 2017 · ludus.one

• 
  Startup Graveyard▲877

  History shouldn't have to repeat itself

  Life & fun · 2017 · startupgraveyard.io

• 
  Good Sales Emails▲813

  Best sales emails from great companies

  Growth · 2017 · goodsalesemails.com

• 
  Things 3.0▲757

  Complete revamp of the original, award-winning task manager

  Work · 2017 · culturedcode.com