GNU Classpath

GNU Classpath is an open-source collection of code libraries that implement the Java programming language's core features. It provides essential tools like data structures, input/output, and networking functions, allowing Java programs to run on different systems without needing proprietary parts. Think of it as a free, community-built backbone that ensures Java applications can operate across various platforms, fostering compatibility and development flexibility. GNU Classpath helps developers create and run Java software more easily, especially in environments where licensing or proprietary code might limit options.