1)   .NET Barcode 2.0
.NET library to generate barcode images, supports Linear (1D), PDF417, Data Matrix, MaxiCode, QACode

 2)   Barcode for .Net 2.0
BusinessRefinery Barcode for .Net is a .NET component that generates 1D and 2D barcodes. It can be used .NET web applications.

 3)   ComponentAce Barcode .NET 1.00
ComponentAce Barcode .NET is a lightweight and flexible .NET class library which lets you easily add high-quality barcode imaging and printing capabilities to your .NET applications.