File archiver which integrates into the windows shell and supports ZIP, CAB, RAR, ARJ, GZIP, BZIP2, TAR, CPIO, RPM, DEB, and it's own format, 7z, which offers a higher compression ratio than any other current archive format.

The graphical version of 7zip is currently only compatible with GNU/Linux under WINE. However, you can use the commandline program p7zip to decompress 7zip files.

Blender is the first and only fully integrated 3D graphics creation suite allowing modeling, animation, rendering, post-production, realtime interactive 3D and game creation and playback with cross-platform compatibility.

Dia is designed to be much like the proprietary Microsoft program 'Visio'. It can be used to draw many different kinds of diagrams. It currently has special objects to help draw entity relationship diagrams, UML diagrams, flowcharts, network diagrams, and simple circuits. It is also possible to add support for new shapes by writing simple XML files, using a subset of SVG to draw the shape.

It can load and save diagrams to a custom XML format (gzipped by default, to save space), can export diagrams to EPS or SVG formats and can print diagrams (including ones that span multiple pages).

Gaim is a multi-protocol instant messaging client, with support for:

• AIM (Oscar and TOC protocols),
• ICQ,
• MSN Messenger,
• Yahoo,
• IRC,
• Jabber,
• Novell,
• Gadu-Gadu, and
• Zephyr networks.

Gaim also supports plugins, for additional functionality.

GIMP is an acronym for GNU Image Manipulation Program. It can be used as a simple paint program, an expert quality photo retouching program, an online batch processing system, a mass production image renderer, an image format converter, etc.

GIMP is expandable and extensible. It is designed to be augmented with plug-ins and extensions to do just about anything.

Anyone who is familiar with the GNU/Linux operating system has probably seen/used the GIMP at some stage. In terms of compatibility, GIMP can open/manipulate the PhotoShop PSD format and the Paint Shop Pro PSP format.

Inkscape is an vector graphics editor, with capabilities similar to Illustrator, Freehand, CorelDraw, or Xara Xtreme using the W3C standard Scalable Vector Graphics (SVG) file format. Supported SVG features include shapes, paths, text, markers, clones, alpha blending, transforms, gradients, patterns, and grouping.

Inkscape also supports Creative Commons meta-data, node editing, layers, complex path operations, bitmap tracing, text-on-path, flowed text, direct XML editing, and more. It imports formats such as JPEG, PNG, TIFF, and others and exports PNG as well as multiple vector-based formats.

MinGW (Minimalist GNU for Windows) provides many of the GNU programming utilities on Windows. It includes the GNU Compiler Collection (GCC), Binutils, Gnu Debugger (GDB), make, and more.

Versatile and modular e-mail client. Supports themes and extensions to customise and increase it's functionality. Has integrated "smart" spam filter, to cut down significantly on spam mail. Also integrates (via EnigMail extension) seamlessly with GNU GPG.

OpenOffice.org is a multi-platform office productivity suite compatible with all major file formats.

Scribus is a desktop publishing application, like Adobe PageMaker or Adobe InDesign from the proprietary software world. It is free software, distributed under the terms of the Gnu General Public License.

Scribus supports many major graphic formats including most all of the standard ones used in DTP in addition to SVG import and export.

Sodipodi is a vector-based drawing program, like CorelDraw or Adobe Illustrator from the proprietary software world, and Sketch or Karbon14 from the free software world. It is free software, distributed under the terms of the Gnu General Public License, Version 2.

Sodipodi uses W3C SVG as its native file format. It is therefore a very useful tool for web designers.

It has a relatively modern display engine, giving you finely antialiased display, alpha transparencies, vector fonts and so on. Sodipodi is written in C, using the Gtk+ toolkit and optionally some Gnome or KDE libraries.

VLC (initially VideoLAN Client) is a highly portable multimedia player for various audio and video formats (MPEG-1, MPEG-2, MPEG-4, DivX, mp3, ogg, ...) as well as DVDs, VCDs, and various streaming protocols. It can also be used as a server to stream in unicast or multicast in IPv4 or IPv6 on a high-bandwidth network.