I'm having a problem with Spotify that causes my mouse to not work properly. Based on my reading online, this problem is caused when third party applications like BetterTouchTool interact with Spotify. I have in the past installed such applications. I don't remember all of them, but a non-exhaustive list includes BetterTouchTool, KeyRemap4MacBook, and MagicPrefs.
I believe I have now uninstalled all such programs as I no longer use them. However, since I'm having this problem with Spotify, my gut says that one of these programs is still covertly active on my computer.
Is there a way I can get an exhaustive list of all third-party applications that might be interacting with my mouse/touchpad? I have tried obvious things like looking in my System Preferences (where such applications often have a preference set) and my Applications folder. Where else can I look?