JRuby is an implementation of the Ruby programming language atop the Java Virtual Machine, written largely in Java. It is free software released under a three-way EPL/GPL/LGPL license.
License: Open Source
FreeBASIC is a simple, lightweight language focused on ease of use and speed, ideal for quick scripts and small applications. In contrast, jRuby is a dynamic language offering rich features and better support for web development, leveraging the Java ecosystem.