CheerpJ Applet Runner

Run Java applets without installing Java
What is CheerpJ Applet Runner?
"CheerpJ Applet Runner" is an Edge add-on developed by Leaning Technologies. It enables users to run legacy Java Applets on modern browsers without the need for a Java plugin or a local Java installation. It operates by converting the Java Applet to WebAssembly and JavaScript instantly. This extension ensures privacy and security as it runs fully client-side without collecting any data or analytics.
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Add-on stats

Users: 34,646
Rating: 3.60 (16)
Version: 10.6 (Last updated: 2023-01-31)
Creation date: 2021-09-06
Risk impact: Very low risk impact
Risk likelihood: Low risk likelihood
Manifest version: 3
Permissions:
  • scripting
  • activeTab
Size: 81.60M

Ranking

# 840
Other rankings
#133 in network keyword 5 ▼ 1 #143 in analytics keyword 68 #166 in company keyword 12 ▲

Other platforms

CheerpJ Applet Runner (v2024.10)
4.52 (257) 100,000
Not available on Firefox
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Add-on summary

Analyze keywords

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 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 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 professional Java to HTML5 compiler. More information on CheerpJ are available at https://leaningtech.com/cheerpj/

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 with [email protected].

User reviews

These summaries are automatically generated weekly using AI based on recent user reviews. Edge Add-on Store does not verify user reviews, so some user reviews may be inaccurate, spammy, or outdated.
Pros
  • Enables running Java applets in Edge
  • Can be used to access old government websites or programs that only run with Java
Cons
  • Frequent issues with launching or running Java applets
  • Requires clicking the icon for every page with applets, which is cumbersome
  • Limited support for encoding, causing issues with embedded Java on webpages
Most mentioned
  • Doesn't work at all
  • Difficulties with launching or running Java applets
  • Requires clicking the icon for every page with applets
  • Limited support for encoding
Recent reviews
Doesn't work at all. Acts like it's going to start the applet, but never actually does.
by R, 2024-04-07
Excelente... falta apenas uma forma de deixar executando? Não encontrei modo de manter ativo
by Luiz, 2024-01-26
据说是用wasm实现了完整的Java applet api，所以你甚至不需要在主机上装java。但是目前它对编码的支持有问题，内嵌Java的网页上其他dom会在启用后变成乱码
by 天祺, 2023-12-28
View all user reviews

Add-on safety

Risk impact

CheerpJ Applet Runner does not require any sensitive permissions.

Risk likelihood

CheerpJ Applet Runner has earned a fairly good reputation and likely can be trusted.

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