zlib is a library implementing the deflate compression method found in gzip and PKZIP. This package includes the shared library.

The "Goodies for Xfce" project includes additional software and artwork that are related to the Xfce desktop, but not part of the official release.

Dicompyler is an extensible, fully open source radiation therapy research platform based on the DICOM standard. It also functions as a cross-platform DICOM RT viewer.

This package is a metapackage that, when installed, guarantees that you have at least one of the four server-side versions of the PHP interpreter installed. Removing this package won't remove PHP from your system, however it may remove other packages that depend on this one.