Pretzel - Keyboard shortcuts for the app you're currently using
cheat - Cheat allows you to create and view interactive cheatsheets on the command-line.
Stacky - Simple app enhancing windows task bar functionality with stacks of shortcuts.
cheat.sh - The only cheat sheet you need Unified access to the best community driven documentation
Runner Pro - Perform Sketch actions quicker with your keyboard
explainshell - Match command-line arguments to their help.