Dropbox:
https://www.getdropbox.com/home#/
Dropbox syncs your files to the INTERWEBZ and allows you to re access the files with your account, I back up all my notes, passwords, cdkeys, and music (i only have about 500mb or so)
You can make a free account with 2GB, and you can earn 250mb everytime you invite someone, limit for that is 3GB.
You can download an app that makes a folder in your documents that you can drag and you can access your music/files/etc on their website, so if you upload a .swf you can play it off your account, or play music with quicktime.
Winamp:
http://www.winamp.com/
Back in the day, winamp was the shit compared to players like WMP and iShit, infact, it's still pretty cool, but it has some flaws (they made a web browser for it, *facepalm*).
Great music player, offers built-in global hotkeys.
Google Chrome
http://www.google.com/chrome
Wassat, you still usin firefox? Well get out from under that rock, because Google Chrome is pretty much the fastest browser right now, although it doesn't offer very much addon support YET, it is fast, has 'google experiments' which use javascript that google has perfectly optimized for fun and games (Google Experiments even has a NES emulator, inorite!!!).
Pidgin
http://www.pidgin.im/
Pidgin is a universal instant messaging client for things like.....
AIM, MSN, Gtalk, Jabber, ICQ, IRC, YIM, etc etc etc.
IRC is a bit lacking but eh who cares it's got a SHITLOAD of plugins for it to make up.
Please, post your favorite software, include some info about it, and feel the