CheerpJ Applet Runner icon

CheerpJ Applet Runner

Extension Actions

CRX ID
bbmolahhldcbngedljfadjlognfaaein
Status
  • Live on Store
Description from extension meta

Run Java applets without installing Java

Image from store
CheerpJ Applet Runner
Description from store

CheerpJ Applet Runner - Run Java applets without installing Java

With the CheerpJ Applet Runner extension, you can run legacy Java Applets on modern browsers without a Java plugin or a Java installation.

Using the CheerpJ Applet Runner is simple. Just install and pin the extension. Next, visit your Applet-based website, click the extension icon in the upper-right corner of your browser, and then press the 'Enable' button in the popup. Once enabled, the extension is activated for the current domain, and Applets will start automatically if they are present.

This extension 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 JVM/JRE replacement for modern browsers. More information on CheerpJ are available at https://www.cheerpj.com.

This software is free to use for non-business 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 license CheerpJ, please get in touch with [email protected].

Latest reviews

Maayan Barnea-Zohar
This has finally managed to solve a problem I've been struggling to solve for quite a long time. The online AbDesigner tool failed to download the dat file so i couldn't see the results either online or on the heatmap viewer (downloaded for offline viewing). Now i can continues checking proteins for epitope and antibody designing :-)
David Pigety
Excellent. Great job.
Haik Sahakian
Works great
gkhar2
awesome, this applet runner made my day. now i can use my old applet based website again.
Geo Man
Excellent!
Nick Warrington
This applet runner allowed me to use the java based web configurator on an old procurve switch. Top Drawer!!
Mohamed Tawfik
the good applet runner ever
Rodrigo Mafort
Incredible work. I thought Applets were lost forever!
XU zy
Amazing, working!
Marv Hepworth
Nice to be able to see my java sites again after years of no access. BRAVO
Abhinav Hingaa
Not working on actual Applet based website. Try this on https://ireps.gov.in/appletTest.html. Not working on this website. However this website (https://ireps.gov.in/appletTest.html) is working on Microsoft Edge in IE mode.
Sergey Denissov
Thank you , you have solved a big problem with Java . good luck and keep going .
Jake Rumberger
noble idea but wont run on my netgear switch...
JD Saidi
Doesnt work, the page doesnt load the applet
JD Saidi
Doesnt work, the page doesnt load the applet
NewZo
I use this Plugin to program our HPE Switches and some other Network devices and it is working great!
NewZo
I use this Plugin to program our HPE Switches and some other Network devices and it is working great!
Sky
Nice but some of the applets I want don't work (maybe because they use opengl?)
Raheemuddin Mohammed
nice
Ayoub Freag
Some Java Applet works and others don't. I send report to verify how to resolve the problem. Thanks
Ayoub Freag
Some Java Applet works and others don't. I send report to verify how to resolve the problem. Thanks
Mark Riordan
The Java Applet I am using looks and behaves very similarly under CheerpJ on a modern computer, vs an ancient computer with an old browser that actually runs Java applets. Performance is good, too. Five stars! Note: You do have to explicitly enable CheerpJ every time you visit a page with an applet.
Gianluca Bonetti
Simply amazing semplicity and effectiveness. Very useful with old switches that only have a Java Applet interface and other similar appliances. Great job!
Gianluca Bonetti
Simply amazing semplicity and effectiveness. Very useful with old switches that only have a Java Applet interface and other similar appliances. Great job!
Robespierre Sentelhas
Some Java Applet works and others don't. I send report to verify how to resolve the problem. Thanks
Alex Prangpratanporn
Super
Alex Prangpratanporn
Super
Rendani Hutagaol
good
Rendani Hutagaol
good
PT. Nusa Raya Cipta Tbk.
very good
PT Nusa Raya Cipta Tbk
very good
vanya rudchenko
extension is very good but when im try to start lwjgl applet it hangs on "Extracting: lwjgl_applet.jar.pack to lwjgl_applet.jar"
vanya rudchenko
extension is very good but when im try to start lwjgl applet it hangs on "Extracting: lwjgl_applet.jar.pack to lwjgl_applet.jar"
Master Fire Hero
bien nose sime sirva
Michael Wynn
Does not work when a second window is opened from the original applet, have to kill the browser tab to progress.
Michael Wynn
Does not work when a second window is opened from the original applet, have to kill the browser tab to progress.
Sandor Gyarmati
Fantastic Tool. All my Applets work again. Thank you. Great work!
Sandor Gyarmati
Fantastic Tool. All my Applets work again. Thank you. Great work!
Wilson Peixoto
Perfeito para meu uso!
Bayumukti Samodra
noice
zegraoui belkacem
Merveille, enfin une solution...
Hanafi Nur Yasin
nice
Hanafi Nur Yasin
nice
Nikos Kaseluris
amazing, I run a 2002 applet!!!
Nikos Kaseluris
amazing, I run a 2002 applet!!!
Simulation
What could I say! This made my day
Simulation
What could I say! This made my day
C. Sa
This was the online way to work on some premitive website, ty so much
C. Sa
This was the online way to work on some premitive website, ty so much
Cardoso Hugo
excelente