Open and Free WSDL library: Web Services Description Language. Libre-wsdl4j is a fork of WSDL4J 1.6.3. WSL4j is a Java stub generator for WSDL. Many software projects still depends on WSL4j, so the idea is that libre-wsdl4j should be an actively maintained version of this software on GitHub. "WSDL, that's an anchronym i haven't heard in almost ten years." Still big in the enterprise world" - comments on the Internet.