FireFox (web browser) Firefox empowers you to browse faster, more safely and more efficiently than with any other browser. Firefox imports your Favorites, settings and other information, so you have nothing to lose. View more than one web page in a single window with this time saving feature. Open links in the background so that they're ready for viewing when you're ready to read them. Built with your security in mind, Firefox keeps your computer safe from malicious spyware by not loading harmful ActiveX controls. A comprehensive set of privacy tools keep your online activity your business. also try Opera or Konqueror
	Pidgin (instant messenger) Pidgin is a multi-protocol instant messaging (IM) client for Linux, BSD, MacOS X, and Windows. It is compatible with AIM and ICQ (Oscar protocol), MSN Messenger, Yahoo!, IRC, Jabber, Gadu-Gadu, SILC, GroupWise Messenger, and Zephyr networks. Pidgin users can log in to multiple accounts on multiple IM networks simultaneously. This means that you can be chatting with friends on AOL Instant Messenger, talking to a friend on Yahoo Messenger, and sitting in an IRC channel all at the same time. also try Kopete
	Grisbi (personal accounting) Grisbi is a personnal accounting application running under GNU/Linux. Grisbi's aim is to provide you with the most simple and intuitive software for basic use, and still very powerful if you spend a little time on the setup. Grisbi can manage multiple accounts, currencies and users. It manages third party, expenditure and receipt categories, as well as budgetary lines, financial years, and other informations for your personal accounting needs. also try GNU Cash
	Beagle (desktop search) Find everyting fast. Beagle is a search tool that ransacks your personal information space to find whatever you're looking for. Beagle can search in many different domains and easily find: documents, email, web history, IM conversations, images, music, applications, etc.
	and the list goes on and on and on and on Skype (intenet telephone) Celestia (astronomical app) Dia (Design and FlowCarts) Tomboy (Notetaking) Zapping (TV Viewer) GCFilms (DVD archiver) etc .....