Flexible open-source content management and blogging software with an active user and developer community and a wide variety of plug-ins or extensions available.
Full-featured open source office productivity suite, featuring word processor, spreadsheet, presentation, drawing and database packages; free MS Office replacement.
Inkscape is an Open Source vector graphics editor, with capabilities similar to Illustrator, Freehand, CorelDraw, or Xara X using the W3C standard Scalable Vector Graphics (SVG) file format.
Scribus is an open-source program that brings award-winning professional page layout to Linux/Unix, MacOS X and Windows desktops with a combination of "press-ready" output and new approaches to page layout.
GRAMPS is a genealogy program for Linux and other UNIX-like systems. The GRAMPS name stands for Genealogical Research and Analysis Management Programming System. GRAMPS helps you track your family tree. It allows you to store, edit, and research.
The Social Source Commons is a “knowledge commons” that provides users with: a directory of software applications; links to relevant documentation, localization tools, services, user reviews; and a place to request tools/features.