Run JNLP files with the latest Java version

Java Web Start (JWS) was deprecated in Java 9, and starting with Java 11, Oracle removed JWS from their JDK distributions. This means that clients that have the latest version of Java installed can no longer use JWS-based applications. And since public support of Java 8 has ended in Q2/2019, companies no longer get any updates and security fixes for Java Web Start.

This is why we decided to create OpenWebStart, an open source reimplementation of the Java Web Start technology. Our replacement provides the most commonly used features of Java Web Start and the JNLP standard, so that your customers can continue using applications based on Java Web Start and JNLP without any change.
OpenWebStart is used by

OpenWebStart support options

Java and your operating system get updates, and so does OpenWebStart. Thanks to the support of our awesome sponsors, OpenWebStart will be updated and further developed as long as needed.

You can of course use OpenWebStart as an open source solution free of charge but we‘d also like to talk to you about support options to guarantee the lasting development.
We are pleased to discuss your individual needs at Please do not post technical questions to this email, use the forum instead.

Stay informed

Want to learn more and stay up-to-date with the project? Sign up to our mailing list.