CheerpJ Applet Runner

Run Java applets without installing Java

What is CheerpJ Applet Runner?

"CheerpJ Applet Runner" is a Chrome extension that allows users to run legacy Java Applets in modern browsers without needing a Java installation. It converts applets to WebAssembly and JavaScript on the fly, providing a seamless experience that is fully client-side, secure, and private. Developed by Leaning Technologies, it is suitable for non-business use on public networks, ensuring that all data remains within your browser. For internal or business use, licensing options are available.

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Extension stats

By: https://cheerpj.com

View on Chrome Web Store

Users: 100,000+

Rating: 4.52 (259) ▲ 1 new ratings

Version: 2024.10 (Last updated: 2024-10-31)

Creation date: 2020-02-06

Risk impact: Very low risk impact

Risk likelihood: Moderate risk likelihood

Manifest version: 3

Permissions:

scripting
activeTab
storage

Size: 125.83M

Email: in*****@leaningtech.com

URLs: Website ,Privacy policy

Ranking

# 2199 ▲ 2

Other rankings

#10538 in Workflow & Planning ▲ 7 #170 in plugin keyword 52 ▲ 9 #209 in install keyword 60 ▲ 39 #284 in chrome keyword 96 ▲

Other platforms

Not available on Firefox

CheerpJ Applet Runner (v2024.10)

3.60

(16) 33,383+

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Extension summary

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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].

User reviews

These summaries are automatically generated weekly using AI based on recent user reviews. Chrome Web Store does not verify user reviews, so some user reviews may be inaccurate, spammy, or outdated.

Pros

Allows users to access Java applets that were previously unavailable.
Works well for some users with network devices and older switches.
Performance is good for certain Java applets.
Simple and effective for resurrecting old Java applet interfaces.

Cons

Inconsistency in functionality; some applets do not work.
Can be slow in operation.
Requires explicit enabling each time to work with applets.
Problems with specific applets like those using OpenGL.

Most mentioned

Not all applets work
Performance issues
Ability to access Java content in modern browsers

Recent reviews

احمد بسري, 2024-11-09

waesome

kazi azharul, 2024-11-03

Molto bene. Sono riuscito ad utilizzare la dasboard di un vecchio switch HP. Ero incerto nel dare la 5° stella perché risulta piuttosto lenta nel funzionamento, ma riconosco che ha risolto un problema.