Zhu3D
Interactive OpenGL-based mathematical function viewer.
Zim
WYSIWYG text editor written in Gtk2-Perl. Zimbra
Server and client software for messaging and collaboration. Zinc
Interactive fiction interpreter.
Zinf
Extensible, cross-platform audio player. ZipSlack
Special edition of Slackware Linux. zlibc
Shared object to transparently uncompress datafiles. ZMech
Animated demos showing some of the capabilities of ZMech. Zoho CRM
Web-based Customer Relationship Management Solution. ZoneMinder
Video camera security and surveillance solution. Zope
Application server for building web sites. Zope 3
Application server for building web sites. Zorin OS
Linux distribution for beginners. Zsh
Shell and powerful scripting language.