CheatSheet is lets you view available keyboard shortcuts in your current application. Just hold the ⌘-Key a bit longer to get a list of all active short cuts of the current application. It's as simple as that.
Shortcuts.design is a small website that lists every shortcut a designer ever wants to know, all designapps in one place and in a simple and clear way. It's very usefull for beginning designers to quickly charge their workflow, when you switched to a new designtool or when you just want a reference for repeating actions!
Devhints is a set of useful cheatsheets displayed in a stylish way
Keyboard Maestro will make you more productive. Even the simplest things, like typing your email address, or going to Gmail or Facebook, launching Pages, or duplicating a line, all take time and add frustration. Let Keyboard Maestro help make your Mac life more pleasant and efficient.
Command Line Productivity is a productivity workflow system built on Alfred for Mac. It turns your Mac back into a place where work gets done instead of another distraction device.