The zint library allows to create images containing bar code information.
Project page: [L1 ] Manual (only present in Version 2.4.2): [L2 ]
Maintainer: Robin Stuart
Licence: bsd like
Robin nowdays works on a Java Version of the library.
There is a command line and a qt frontend, both under GPL. Robin is wokring on a Java version.
A TCL binding for libzint is available as library "zint":
Project page: [L3 ]
Author: Harald Oehlmann
Licence: same as zint library
Source: [L4 ]