Handy OS X Utilities
I haven't seen a thread of this type... so here it is...
Let's compile a list of handy utility-type apps for OS X. This isn't intended to be comprehensive list of all software for OS X... but rather a favorite utility list...
Here's my first entry:
See Keyboard Shortcuts Visually With CheatSheet [OS X Tips] | Cult of Mac
Install the app. Then, in any OS X app, hold the Command key to see a list of keyboard shortcuts.