open source (LGPL) library for generating QR Code, 2-dimensional barcode. Based on libqrencode C library, provides API for creating QR Code barcode images (PNG, JPEG thanks to GD2). Implemented purely in PHP, with no external dependencies (except GD2 if needed)
ACHTUNG: verlinkt auf beetag-datenbank, nicht direkt zur eingegebenen URL; kann auch in vektor-formate wie eps und svg speichern; erstellt beetags, qr-codes und datamatrix
ZXing (pronounced "zebra crossing") is an open-source, multi-format 1D/2D barcode image processing library implemented in Java. Our focus is on using the built-in camera on mobile phones to photograph and decode barcodes on the device, without communicating with a server.