You have free and paid tools. Based on my own experiences...
- For free open source solutions, the only reliable is
http://zxingnet.codeplex.com[
^]
- For paid solutions, I've worked with a most of them and the only reliable ones from companies like Neodynamic & IDAutomation. There are many others but most of them are just copycats that do not know anything about barcode standards.
PS: Do not use a font for barcodes never! They are just not suitable for real scenarios.