What is open source

VideNowadays Linux , Yubuntu , MeeGo , with the source code in Fedora as many good operating system ( OS ) that are free . With open source software means that the source code is released . Anyone can Modifai this code and can create the customized software . Google's Android software is based on Linux and is giving tough competition to its anti OS . You can download the www.ubuntu.com Yubuntu . Open Source Alternative to something like :
Popular Software Open Source Alternative
Adobe Acrobat Reader okular (http://okular.kde.org/download.phd)
Adobe PageMaker Scribus (http://www.scribus.net/)
Adobe Photoshop CinePaint (http://www.cinepaint.org/)
Dreamweaver KompoZer (http://www.kompozer.org)
Fontografr FontForge (http://fontforge.sourceforge.net/)
Microsoft FrontPage Quanta Plus (http://quanta.kdewebdev.org/)
Microsoft Office OpenOffice (http://openoffice.org/)
Microsoft Outlook ( Express ) : -
Thunderbird (http://www.mozillamessaging.com/enUS/thunderbird/)
Microsoft Project kplato (http://koffice.org/kplato/)
MSN Messenger Pidgin Pidgin (http://pidgin.im)
Nero burning Rome X-CD-Roast (http://www.xcdroast.org/)
Vinamp Odeshiys (http://audacious-media-player.org/Main_Page)
Window Media Player KPlayer (http://kplayer.sourceforge.net/)
VLC Player (http://www.videolan.org/vlc/)
Vinjip -7 ZIP (http://www.7-zip.org)
If you use these softwares , you will not need a paid software . These are quite good . These superior features such as paid software may not , of course , but with the help of these tools can be a professional job .