Software Alternatives, Accelerators & Startups

CheerpJ VS Lightspark

Compare CheerpJ VS Lightspark and see what are their differences

CheerpJ logo CheerpJ

The complete Java runtime for modern browsers. CheerpJ is the only solution that can run any large-scale, unmodified Java applications, applets, or libraries in the browser. No downloads or plugins are required.

Lightspark logo Lightspark

The Lightspark project
Not present

Run Java Applications on Modern Browsers

CheerpJ allows organizations to modernise their Java applications by making them usable from modern browsers, without needing a local JVM installation.

It has extensive compatibility with Java 8*, including file access, networking, clipboard, and many other system features. It is compatible with Java Swing, Oracle Forms, Oracle EBS, and any other framework or library. Other Java versions can be supported according to your needs.

*Tested on Oracle Forms, EBS, Swing, AWT and numerous frameworks and libraries.

Legacy Applications

CheerpJ allows organizations to preserve access to legacy Java applications (Applets, JNLPs, and stand-alone applications) by running them on the browser, without requiring a local JVM installation.

It is compatible with Java Swing, Oracle Forms, EBS, and other third-party frameworks.

With CheerpJ, you can remove the requirement for IE and Java on the client, and upgrade the accessibility and security of your application.

Modernise your Java Application to HTML5

With CheerpJ Organisations with products based on Java can migrate applications to HTML5 or the cloud with minimal or no effort, making them accessible from modern browsers, without a local Java installation.

CheerpJ allows a fully automated, full or partial migration of an existing Java client to a browser-based web application.

Integrate Java libraries into your web application

CheerpJ allows web developers to integrate Java libraries and components in native web applications.

CheerpJ is a browser-side JVM replacement in WebAssembly and supports seamless interoperability with HTML5/JavaScript.

  • Lightspark Landing page
    Landing page //
    2021-10-02

CheerpJ videos

CheerpJ Demo

Lightspark videos

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Category Popularity

0-100% (relative to CheerpJ and Lightspark)
Online Services
25 25%
75% 75
Software Development
100 100%
0% 0
Product Presentation
0 0%
100% 100
Game Engine
36 36%
64% 64

User comments

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Social recommendations and mentions

Based on our record, CheerpJ should be more popular than Lightspark. It has been mentiond 14 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

CheerpJ mentions (14)

  • I found one of my first programs (Java,2011) on the Wayback Machine and it runs
    If you want to run your applet today, try CherpJ: https://cheerpj.com/ This should be able to run absolutely any Java in the browser. - Source: Hacker News / about 1 month ago
  • Phet: Interactive Simulators for Science and Math
    Many of the simulations on this site are Java web applets, kept running thanks to CheerpJ (https://leaningtech.com/cheerpj/). - Source: Hacker News / 8 months ago
  • WCGI: WebAssembly and CGI
    And now you can run a wasm jvm: https://leaningtech.com/cheerpj/ (there are others, too). - Source: Hacker News / about 1 year ago
  • Coffee beans are becoming extinct
    Eh, they should all compile to wasm anyway... Https://leaningtech.com/cheerpj/. Source: about 1 year ago
  • Has anyone tried playing on Android?
    Also, I tried using https://leaningtech.com/cheerpj/ to create a web version of ROTP, but it was quite slow and nobody seemed interested. Source: over 1 year ago
View more

Lightspark mentions (9)

  • When SVG almost got network support for raw sockets
    Not the first attempted Flash reimplementation[1,2,3]. The GNU one didn’t work all that well back in the day as far as I remember, but then Flash was a moving target at the time. [1]: https://www.gnu.org/software/gnash/ [2]: http://lightspark.github.io/ [3]: https://github.com/mozilla/shumway. - Source: Hacker News / about 1 year ago
  • Good flash emulator for walfas?
    A true emulator would be something like Ruffle or Lightspark. Ruffle I know doesn't work well with Walfas last time I checked. I don't know about Lightspark. Source: almost 2 years ago
  • Flash game to Html5 converter
    Lightspark, a browser plugin written in C++. It's a work in progress, not every flash content will work. Modern mainstream browsers don't support running it within a page, so flash content needs to be run in a standalone lightspark app, or in some lesser known browsers. Source: almost 2 years ago
  • How and where do I tell CMake where my C/CXX compiler is?
    I'm trying to install lightspark on my computer, and it hinges on launching a shell script that mainly executes a CMake command. When I try ./build.sh (the name of the shell script), I get a bunch of lines of errors. The first one I think is major is CMake Error at /usr/share/cmake-3.23/Modules/CMakeTestCCompiler.cmake:69 (message): The C compiler "/usr/bin/cc" is not able to compile a simple test... Source: almost 2 years ago
  • What "legacy" software are you still forced to use in 2022 that you wish would die?
    I'm having alot of fun with this post actually. I wouldn't be surprised if there was some alternative or workaround for whatever you guys need to run. For example, instead of the clunky Java, we have this. Instead of Flash, try this. Source: over 2 years ago
View more

What are some alternatives?

When comparing CheerpJ and Lightspark, you can also consider the following products

CheerpX for Flash - its adobe flash player in webassembly

Ruffle - An open source Flash player

ZK Framework - A highly productive open source Java framework for building amazing enterprise web and mobile applications.

BlueMaxima's Flashpoint - the webgame preservation project.

OpenSilver - Open-source re-implementation of Silverlight on modern browsers using WebAssembly.

Flash Player 2021 - Want to fix "This plugin is not supported" and "Adobe Flash Player is blocked" error messages? This extension will remove those messages and allow you to play Flash in any website with a single click.