1)   Barcode.dll 1.0
Barcode.dll is a powerful .NET component for creating barcode images. You can easily integrate barcodes with your application using any .NET language. Online demo is available. It supports most barcode sybologies, output in many formats and rotation.

 2)   ABarCode for Excel 1.2.0
ABarCode is a Microsoft® Excel Add-in that draws formula-based bar codes into Excel worksheets. Available symbologies are Code 128, Code 39, Extended Code 39, EAN-8, EAN-13, UCC/EAN-128, ITF (Interleaved Two of Five), Postnet, UPC-A, UPC-E.

 3)   Bar Code 128 4.1
Print bar code 128 from Windows! Subsets A, B, C, UCC/EAN 128, SCC-14, and SSCC-18 in OpenType or PostScript. Standard and human readable fonts. VBA macros for Excel and Access, Word label templates, and our Bar128 utility to calculate checksums.

 4)   RBarcode for .NET 1.0
.NET Components that creates 1D and 2D barcodes for VBnet and C#. Supported symbologies include EAN, UPC, code128, datamatrix, maxicode, pdf 417, macro pdf 417, QRCode, RSS14 and more. Includes server controls and windows forms controls.

 5)   Bar Codes Plus 3.0
Here's an easy way to print bar codes from Windows! This set contains scalable TrueType barcode fonts for: 2/5 interleaved, 3/9, 93, 128, Bookland, Codabar, EAN, OCR, PostNet, and UPC. Plus VBA macros, Word label templates, and a utility program.