Mac: When you're setting up a new computer, one of the most time-consuming tasks is customising all your software and tweaingk application settings. Mackup is a utility that backs up your application settings to Dropbox so you can easily migrate them between computers.
Mackup works entirely in the Terminal, and once it's installed requires just a single line to send a backup of your settings to Dropbox. When you're done, you can import all your settings on your new computer. It only brings in your configuration settings, so you don't have to worry about temp files or caches coming over as well. If you're migrating your settings over to a new Mac, or you just want to keep a backup of them, Mackup works well.