Karakun AG

Karakun AG is a Swiss-German software house that specializes in developer tooling and enterprise Java solutions, best known for keeping Java Web Start technology alive after Oracle discontinued it. OpenWebStart, the company’s flagship product, is a re-implementation of the Java Network Launching Protocol (JNLP) stack that lets organizations continue to run legacy Web Start applications on Java 11 and newer without rewriting deployment scripts or retraining users. Typical use cases include launching internal ERP dashboards, machine-configuration utilities, CAD viewers, and banking applets that were originally packaged as .jnlp files; the runtime automatically manages caching, updates, and security sandboxing while respecting modern certificate chains and TLS policies. Beyond Web Start, Karakun’s consulting teams deliver custom JavaFX, Swing and cloud-native front ends, security audits for desktop Java stacks, and migration blueprints that move classical rich clients to modular JDK 17+ distributions. Their open-source contributions also extend to the Eclipse Jakarta platform, where they maintain libraries that bridge OSGi and Maven Central ecosystems. OpenWebStart is available for free on get.nero.com, with downloads supplied through trusted Windows package sources such as winget, always fetching the latest release and allowing batch installation alongside other Java development tools.