Pretzel - Keyboard shortcuts for the app you're currently using
Productivity.so - Shortcuts and hacks for your favorite tools
KeyCue - Menu shortcuts are supposed to provide quick access to frequently used menu commands.
Productivity Planner - This package contains a selection of 10 templates that have helped me increase my productivity over the past 5 years.
Hotkey Commander - Find out and override what hotkey combination is registered by which application.
Productivity Tools by Dropbox - Scan, share, collaborate & provide feedback on your ideas