The complete Java runtime for modern browsers

CheerpJ is the only solution which can run any large-scale, unmodified Java applications, applets, or libraries in the browser. No downloads or plugins required.

February 1st 2024: CheerpJ 3.0 now available

What is CheerpJ?

An Enterprise-grade solution to modernise and preserve access to mission-critical Java Applications and Applets by removing the requirement for Java on the client.

CheerpJ is a drop-in replacement for the JVM in HTML5, capable of running any Java Application, Applet and Library on modern browsers.

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