With the CheerpJ Applet Runner extension, you can run legacy Java Applets on modern browsers without a Java plugin or a local installation of Java.
Using The CheerpJ Applet Runner is simple. Install the extension, visit your Applet-based website, and enable the extension by clicking on its icon on the upper right corner of your browser!
This software is free to use for non-commercial purposes on public-network Applets. For any other use, such as internal network applets, or if you are a company or public-sector organisation and would like to licence CheerpJ, please get in touch.
The CheerpJ Applet Runner works by ‘converting’ the Java Applet to WebAssembly and JavaScript on the fly. It is private and secure, runs fully client-side (i.e. it does not contact any server), and does not collect any data or analytics at all. All your data, as well as your application, are kept within the boundaries of your browser.
This extension, developed by Leaning Technologies, is based on CheerpJ, a professional Java to HTML5 compiler. Find out more about CheerpJ.
Free to use for non-commercial purposes on public-network Applets. Download it today!
Free to use for non-commercial purposes on public-network Applets. Download it today!
Explore CheerpJ for options to pre-convert Java Applets and Java Swing clients.
Perfect solution for those whose browsers won’t load these older legacy applets. Easy to use. Excellent customer service (better than paid services I use). Literally, nothing could be better.
Nathan Crowder
With Java no longer working with any of the apps that I use for teaching statistics as a university professor, I was not able to show hands visual examples of regression concepts. I was lucky enough to stumble upon the CheerpJ extension… Great product!
J-P Laurenceau
A superb extension with great customer support!
We have a large, extensive applet that displays automated weather reports from commercial aircraft– that is used by weather services worldwide. Thanks to CheerpJ we can now run it again in a browser.
Bill Moninger