[MrB]

Here's an idea VM - roll out your apps, then remove access to the unofficial ones. Not difficult and everyone's happy.

As another suggestion, rather than wasting time and money developing your own, why not just approach the nice people who have released their free versions, that currently work and ... erm ... buy/licence or simply direct customers to them and move on to some other feature that needs adding/repairing? In the latter case, it would cost you nothing for this useful feature - you know, one that many of us are currently using quite happily now and cost you nothing to develop!

MrB