Alternative To is a website that gives you a list of open-source alternatives to every application out there. The sign is well designed, easy to use, and has a great database for all platforms.
The other day I was checking out Soocial, a pretty neat Mac application that allows you to sync a bunch of devices. They have a real neat video to explain what their product can do for you. Do checkout the application also. It can make your life on the Mac a lot easier.
