For those of you that DO NOT have an in-house solution, and offer downloadable software what do you use as an order system and/or licensing system? The main shopping cart I am aware of is osCommerce but I believe it is not ideal for a "script store". As for licensesing, the only one I know of is iono.
I am looking for something (at this point) that is more affordable than Zend Guard. Iono is the only other I know of, but it doesn't seem "popular" and I surely don't want to run into any bugs or anything. Is there anything besides Zend Guard or Iono?