Open Source Tools for Audio/Music
Amarok, Songbird Replaces iTunes
Open Source Tools for Internet Browsing
Chrome can be used instead of Internet Explorer
Open Source Tools for Compression
7-zip, PeaZip can be used instead of WinZip
Open Source Tools for Content Management
Alfresco can be used instead of Sharepoint
MindTouch can be used instead of Sharepoint, IBM Lotus
Open Source Tools for Database
Kexi can be used instead of Microsoft Access
Firebird and SQL can be used instead of Microsoft SQL Server, others
Open Source Tools for Desktop Publishing
Scribus can be used instead of InDesign, QuarkXPress, Microsoft Office Publisher
Open Source Tools for E-mail/Collaboration/Groupware
Collabtive can be used instead of Basecamp
Zimbra, Thunderbird , phpGroupWare, Group-Office, Evolution can be used instead of Microsoft Office Outlook
Zimbra can be used instead of Microsoft Exchange
Open Source Tools File Transfer
FileZilla, FireFTP, WinSCP 26 WinSCP
Open Source Tools Games
FlightGear can be used instead of Microsoft Flight Simulator X
FreeCol can be used instead of Civilization
Frets on Fire can be used instead of Guitar Hero
Secret Maryo Chronicles can be used instead of Mario Bros. Games
StepMania can be used instead of Dance Dance Revolution
Open Source Tools Gateway Security Appliances
Untangle, Endian Firewall Community can be used instead of Check Point Security Gateways, McAfee, SonicWall
Open Source Tools Graphics/Drawing
Archimedes can be used instead of AutoCAD
Dia can be used instead of Visio
Piant.Net and Gimp can be used instead of Photoshop
Inkscape can be used instead of Illustrator, CorelDraw
Paint.Net can be used instead of Photoshop
Open Source Tools Instant Messaging
aMSN, Pidgin, Adium can be used instead of AIM, Yahoo! Messenger, Windows Live Messenger
Open Source Tools Office Productivity
AbiWord can be used instead of Microsoft Word
FreeMind can be used instead of MindJet
Gnumeric can be used instead of Microsoft Excel
Neo offive, Open Office, StarOffice, KOffice can be used instead of Microsoft Office
Open Source Tools Operating System
Suse, Ubuntu and Red Hat can be used instead of Windows
Open Source Tools Password Manager
KeePass can be used instead of RoboForm, LastPass
Open Source Tools PDF Tools
PDFCreator , Sumatra PDF can be used instead of Adobe Reader
Open Source Tools Text Editor
jEdit can be used instead of WordPad
Open Source Tools Utilities
Launchy can be used instead of Windows Start Menu
DocFetcher can be used instead of Standard desktop search
UltraDefrag can be used instead of Disk Defragmenter
Karsten SlideShow can be used instead of My Pictures Slideshow
Pravesh Pushp 'BLOG' 