In this directory, you will find several smaller software projects (avaiable under GPL) like autools - a collection of audio utilities for Linux/Solaris/IRIX/Win32. In addition, there are some patches and templates for tools like xfig and pdfLaTeX and Linux drivers for digital soundcards like ZA2 and RME9652 Hammerfall.
Please see the full directory listing for a complete list of available files and patches.