Zint 2.4

Generate images for customizing barcodes in your system. Work with the options for accessing an asset library written entirely in C and released under GPLv3 or later. Build barcodes supporting Code 128, Data Matrix, USPS OneCode, EAN-128, UPC/EAN, ITF, QR Code, etc.

Zint is an Open Source barcode encoding and image generating library written entirely in C and released under GPLv3 or later.
A barcode encoding library supporting over 50 symbologies including Code 128, Data Matrix, USPS OneCode, EAN-128, UPC/EAN, ITF, QR Code, Code 16k, PDF417, MicroPDF417, LOGMARS, Maxicode, GS1 DataBar, Aztec, Composite Symbols and more.