CheerpJ 1.3 – Compile any Java application to JS/HTML5

In plain words

CheerpJ 1.3 is a compiler that converts Java applications into JavaScript and HTML5, enabling them to run in web browsers. It is designed for developers who need to deploy existing Java programs on the web without rewriting them. The tool handles the translation from Java bytecode to web-compatible formats, making legacy Java applications accessible through standard web interfaces.

written from the facts on this page · September 2026

• 
  CheerpJ2024 · cheerpj.com · ▲5

  The complete Java runtime for modern browsers

• 
  CheerpX – x86 Node.js/python3/Ruby REPL in browser via WebAssembly JIT2021 · repl.leaningtech.com · ▲88

  Linux virtual machine, running in the browser via HTML5/WebAssembly. Networking and graphics supported.

• 
  Joy – a Go to JavaScript compiler2017 · mat.tm · ▲201

  Matt Mueller's personal website for sharing what I've learned about programming, design, entrepreneurship and life.

• UJ
  Unmodified Java Swing apps in any browser, fully client side2017 · cheerpjdemos.leaningtech.com · ▲29

  Leaning Technologies - We bring applications to the Web.

• 
  Anime.js 3.02019 · animejs.com · ▲354

  Lightweight JavaScript animation library

• 
  1 KB JavaScript library for building front end apps2017 · github.com · ▲242

  1kB-ish JavaScript framework for building hypertext applications - hyperapp/hyperapp

• 
  SimCity, but with Permits▲903

  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 · 1d ago · permit.petercai.com

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

  Life & fun · 13d 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 · 14d 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 · 8d 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 · 12d ago · carrierexplode.com

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

  Life & fun · 22d ago · space.bl2.net

• 
  remove.bg▲2,028

  Remove image backgrounds automatically in 5 seconds with just one click. Don't spend hours manually picking pixels. Upload your photo now & see the magic.

  Work · 2018 · remove.bg

• 
  Humaaans▲1,592

  Mix-&-match illustrations of humans with a design library.

  Growth · 2018 · humaaans.com

• 
  Refactoring UI: The Book▲822

  Make your ideas look awesome, without relying on a designer

  Life & fun · 2018 · refactoringui.com

• 
  The Y Combinator Database 2.0▲604

  Everything you ever wanted to know about YC companies

  Growth · 2018 · ycdb.co

• 
  Ouch! Illustrations▲590

  Free illustrations for better UX

  Growth · 2018 · icons8.com

• 
  Visa List 1.0▲576

  Know where you can travel with your passport tension free ✈️

  Life & fun · 2018 · visalist.io