cheat - Cheat allows you to create and view interactive cheatsheets on the command-line.
Typeeto - Use Mac’s keyboard to type on iPad, iPhone, Android, etc.
cheat.sh - The only cheat sheet you need Unified access to the best community driven documentation
Type2phone - Type2Phone: Use your Mac as keyboard for iOS devices
explainshell - Match command-line arguments to their help.
Mocha Keyboard - Mocha Keyboard is a leading Bluetooth keyboard application for iPad, iPhone, and iPod touch.