CheerpJ Applet Runner
Run Java applets without installing Java
As of June 2026, CheerpJ Applet Runner has 90,000 users and a 4.54/5 rating from 281 reviews in the Workflow & Planning category.
Usersdown 10.0 percent−10.0%
90.0K
90,000
Ratingup 0.2 percent+0.2%
4.54
281 reviews
Reviewsup 0.7 percent+0.7%
281
Version
2026.6
Manifest V3
90-day change · In the last 90 days this extension lost 10.0K users, 2 version updates.
History
7 snapshotsTracking since Apr 16, 2026.
View as table
| Date | Users | Rating | Reviews | Version |
|---|---|---|---|---|
| Apr 16, 2026 | 100.0K | 4.53 | 279 | 2026.3 |
| Apr 26, 2026 | 100.0K | 4.54 | 280 | 2026.3 |
| May 11, 2026 | 100.0K | 4.54 | 280 | 2026.3 |
| May 14, 2026 | 100.0K | 4.54 | 281 | 2026.3 |
| Jun 2, 2026 | 100.0K | 4.54 | 281 | 2026.5 |
| Jun 5, 2026 | 90.0K | 4.54 | 281 | 2026.6 |
| Jun 7, 2026 | 100.0K | 4.54 | 281 | 2026.6 |
| Now | 90.0K | 4.54 | 281 | 2026.6 |
Permissions & access
- Permissions
- scriptingactiveTabstoragedeclarativeNetRequestWithHostAccessalarms
- Host access
- None declared
Screenshots
About
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].
Technical
- Version
- 2026.6
- Manifest
- V3
- Size
- 121MiB
- Min Chrome
- 88
- Languages
- 1
- Featured
- No
Metadata
- ID
- bbmolahhldcbngedljfadjlognfaaein
- Developer ID
- u314103a5c3239d0b07aed1580fb34f7c
- Developer Email
- [email protected]
- Created
- May 15, 2017
- Last Updated (Store)
- Jun 2, 2026
- Last Scraped
- Jun 19, 2026
- Website
- cheerpj.com
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