I decided to open source  my DFD Turbolist Converter project  today. It was originally a proprietary ioncube-encrypted  app. Since I am switching my business model over to a vendor-only role (no more custom coding jobs for clients), I figured it was best from a marketing perspective.
I want everything to be free and open source for quite awhile, then maybe develop addons for the core product(s) that cost just a few bucks / are proprietary. It depends how well pure open source goes, we’ll see eventually…fingers crossed 🙂