Digsby

Digsby is a PC application that links all your email, social networking, and Instant Messages to one central location. I use this on my work PC and I link my Yahoo messenger, Gmail, Gtalk messenger, Twitter, and Hotmail.

AirDroid

To the Android users out there, check out Air Droid.  This is a free app that turns you smartphone into a server where you can:

• Play music from your device
• Look at pictures
• Send text messages
• Transfer files to and from your computer

All from your web browser.