Open QR Code is an open-source, cross-platform app
Scanner online
PHP Student Attendance System, scan QR code to take attendance.
Grabs text of QR code from a screen and copies it to clipboard
Easy-to-use PHP QrCode generator with first-party support for Laravel
2FA QR Code Reader for KeePass
A Fast QR code detector for arbitrarily acquired images
QR code reader/scanner/generator