I'm in two markets, both heavily reliant on PDF rendering, viewing and distribution. Commonly PDF/A, which isn't very popular so having to adapt libraries happe

I'm in two markets, both heavily reliant on PDF rendering, viewing and distribution. Commonly PDF/A, which isn't very popular so having to adapt libraries happens every now and then. We're both into desktop applications and network services. While I'm quite FOSS positive, a lot around GPL style licensing hasn't been tested in court and I don't want to be a pioneer in this area. Besides the business aspects of having to maybe publish some of the 'secret sauce', of course.