Anvil PDF Filling API - The easiest way to programmatically populate any PDF
Scan Menu - Get an online menu for your restaurant
PDFShift - Convert any HTML documents to high-fidelity PDF using a single POST request
Scanly - Free contactless NFC/QR digital menus management
KDAN Mobile PDF Reader - PDF Reader is the one app you can rely on when you need a portable solution to work with PDFs.
Chatmeal - Whatsapp-powered food ordering tool for restaurants