Hey.
I use apps like Yoink, Memory Scope, Alfred and MacCleanse on my MBP.
I'm also gonna get MagicPrefs for the magic mouse when I receive my new iMac 😀 It's not on the app store though.
Yoink: A buffer in the side of the screen where you can place files when moving between folders (very useful, love the app)
Memory Scope: RAM control.
Alfred: An expanded version og the integrated spotlight.
MacCleanse: Tool to help you clean up thrash files on your mac.