Click on the name to download the program you want.
The Software is compressed in zip format. You can expand it by double-clicking the zip file.
There's no difference between the trial version you download and the paid version. You just have a word covering the resulting barcode in the demo version, but all the options are the same, so you can fully test the program, and if it fulfills your needs, then you can buy it.

Mac OS X 10.4 (Tiger) - 10.11 (El Capitan) : 929 Kb
Mac OS X 10.4 (Tiger) - 10.11 (El Capitan) : 908 Kb