CheerpJ
The complete Java runtime for modern browsers
CheerpJ launched on May 23, 2024 with 5 votes, #1,921 of 4,539 launches that month. The site was still online in September 2026, 2 years on.
What it does
CheerpJ is the only solution which can run any large-scale, unmodified Java applications, applets, or libraries in the browser. No downloads or plugins required.
No plugins. No desktop installs. No application rewrite required. Rewriting critical systems is expensive, risky, and rarely necessary. CheerpJ runs Java applications in the browser, preserving your investment while simplifying deployment. CheerpJ runs standard Java applications directly in the browser using WebAssembly. It provides a full OpenJDK runtime and Java Virtual Machine that executes Java bytecode without plugins, desktop installations, or source code changes. CheerpJ includes a full OpenJDK runtime compiled to WebAssembly and JavaScript. It supports Java 8, Java 11, and Java 17 applications and runs entirely inside modern browsers. Java bytecode starts in an interpreter, while…from cheerpj.com
Does a similar job
all alternatives →- UJUnmodified Java Swing apps in any browser, fully client side2017 · cheerpjdemos.leaningtech.com · ▲29
Leaning Technologies - We bring applications to the Web.
- C1CheerpJ 1.3 – Compile any Java application to JS/HTML52018 · medium.com · ▲10
CheerpX – x86 Node.js/python3/Ruby REPL in browser via WebAssembly JIT2021 · repl.leaningtech.com · ▲88Linux virtual machine, running in the browser via HTML5/WebAssembly. Networking and graphics supported.
JavaFiddle – Compile, run and share Java code fully client side2023 · javafiddle.leaningtech.com · ▲66
Crawlee – Web scraping and browser automation library for Node.js2022 · crawlee.dev · ▲282Hey HN, This is Jan, founder of Apify, a web scraping and automation platform. Drawing on our team's years of experience, today we're launching Crawlee [1], the web scraping and browser automation library for Node.js that's designed for the fastest development and maximum reliability in production. For details, see the short video [2] or read the announcement blog post [3]. Main features: - Supports headless browsers with Playwright or Puppeteer - Supports raw HTTP crawling with Cheerio or JSDOM - Automated parallelization and scaling of crawlers for best performance - Avoids blocking using…
- CXCheerpX – x86 virtualization in browser using WebAssembly – Python Demo2020 · leaningtech.com · ▲26
Run anything in the browser with Leaning Technologies
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