1. Firefox
Best browser according to me. Make it the default browser.2. AVG Free Version
Best Anti-Virus that is free currently. Uses minimal resources I guess.3. Winrar
There are plenty of solid compression utilities to choose from, but this shareware powerhouse offers the features and ease of use that place it at the top of the compression category. WinRAR is easy to use, lightweight, and flexible.4. Klite Mega Codec Pack
K-Lite Codec Pack is a collection of codecs and related tools. Codecs are required to encode and/or decode (play) audio and video. The K-Lite Codec Pack is designed as a user-friendly solution for playing all your movie files. With the K-Lite Codec Pack you should be able to play 99% of all the movies that you download from the internet.
5. Tweetdeck
Connect your Twitter, Facebook and Linkedin updates all together with this great program. If you are on Twitter or Facebook it is a must have application.6. Evernote
Evernote works by connecting all the computers and phones you use daily, allowing you to capture something in one place and then access it from another7. Pidgin
Pidgin is a chat program which lets you log in to accounts on multiple chat networks simultaneously. This means that you can be chatting with friends on MSN, talking to a friend on Google Talk, and sitting in a Yahoo chat room all at the same time.Pidgin is compatible with the following chat networks out of the box: AIM, ICQ, Google Talk, Jabber/XMPP, MSN Messenger, Yahoo!, Bonjour, Gadu-Gadu, IRC, Novell GroupWise Messenger, QQ, Lotus Sametime, SILC, SIMPLE, MXit, MySpaceIM, and Zephyr. It can support many more with plugins.