BarcodeLib.com Barcode Fonts
BarcodeLib.com software generates barcodes in Microsoft Office and reporting tools like Oracle and Crystal Reports. It supports multiple barcode types including Code 39, Code 128, and QRCode.
BarcodeLib.com 
Barcode for .NET
This .NET library creates barcode images, and offers support for Linear (1D), PDF417, Data Matrix, MaxiCode, and QRCode formats.
Java Barcode Generator
This Java library can generate barcode images for Linear (1D), PDF417, Data Matrix, MaxiCode, and QRCode formats.
Java Barcode Reader
Barcode Reader for Java is a library that enables the reading of Linear (1D), PDF417 (2D), Data Matrix, and QRCode barcodes.