Scanner Pro - Scanner Pro turns your iPhone into portable scanner in your pocket.
Keypirinha - A lightning fast and flexible keystroke launcher for Windows. No installation required (portable).
Genius Scan - On The Go.
Alfred - Alfred is an award-winning app for macOS which boosts your efficiency with hotkeys, keywords, text expansion and more. Search your Mac and the web, and be more productive with custom actions to control your Mac.
Scanbot - Scanbot is a mobile app that allows you to use your device's camera as a document scanner. The app is capable of scanning a large number of source materials, and it can handle QR codes as well.
Listary - Listary is a revolutionary search utility for Windows