1)Ubuntu (pronounced /u'bun.tu/, or "oo-boon-too"), is a free Debian-derived computer operating system based on GNU/Linux. Ubuntu's goals include providing an up-to-date, stable operating system for the average user, with a strong focus on usability and ease-of-installation. Ubuntu has been selected by readers of desktoplinux.com as the most popular Linux distribution for the desktop, claiming approximately 30% of their desktop installations in both 2006 and 2007.
2)OpenOffice.org (OO.o or OOo), commonly known simply as OpenOffice, is an office application suite available for a number of different computer operating systems. It is distributed as free software. It supports the ISO/IEC standard OpenDocument Format (ODF) for data interchange as its default file format, as well as Microsoft Office formats among others. As of March 2009[update], OpenOffice supports over 80 languages.
3)GIMP (GNU Image Manipulation Program, previously General Image Manipulation Program) is a free software, raster graphics editor used to process digital photographs and other graphics. Primarily GIMP is used for photo enhancement. Uses include resizing and cropping photos, altering colors, combining multiple images, removing unwanted image components, and converting between different image formats as well as creating graphics and logos.
4)Audacity is a digital audio editor and recording application. Audacity is cross-platform and is available for Windows, Mac OS X, Linux and BSD.
5)Open Movie Editor is a free and open source video editing program, designed for basic movie making capabilities. It aims do be powerful enough for the amateur movie artist, yet easy to use.