CheerpJ Applet Runner

by Leaning Technologies Limited

Utilities java-applets legacy-apps webassembly browser-extension utilities developer-tools modern-browsers no-installation

Quick Look

Run legacy Java Applets in modern browsers by converting them to WebAssembly and JavaScript client-side, without needing a Java installation.

AI Overview

Who is this for?

Users who need to run old Java Applets on current web browsers without manual Java setup.

Key Features

→ Enables running Java Applets without Java installation or plugin.
→ Converts Applets to WebAssembly and JavaScript on the fly.
→ Works entirely client-side for privacy and security.
→ Simple to install, pin, and enable via browser extension popup.
→ Supports legacy applications on modern web platforms.

Reviews Analysis

Overall Sentiment

Mostly Positive

Users appreciate the extension's ability to run Java applets in modern browsers without installation, enhancing compatibility with older applications.

Note: AI analysis focuses on the substance and recency of reviews, which may differ from the overall store rating.

What Users Love

✓ Enables running Java Applets without needing a Java installation.
✓ Works well for accessing legacy web applications.
✓ Good performance and client-side operation.

Points to Consider

× A small number of users suggest it can be a bit complex to set up initially.
× Occasional compatibility issues reported with specific applets.

Official Description

From the Developer

Run Java applets without installing Java

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 sales@leaningtech.com.

Your extension? Let us know if we can update or correct anything!