https://filesync.app/

The simplest way to create and scan QR codes. Design beautiful QR codes in just a few clicks, and scan codes instantly. Perfect for everyone, from beginners to professionals

Open-source digital business card platform with QR codes and PWA support

Swiish is a self-hostable platform for creating and sharing digital business cards. Create beautiful, customizable business cards with QR codes, share them via links, and let users save your contact information directly to their phones.