As the person in charge of PDF development at IDRsolutions, I am lucky enough to work with some very intelligent people who are remarkably tolerant of me… There are code contributions from around 20 people (at time of writing) in our repository, and you can read a list of contributors at the end our free guide to PDF for Java developers.
Daniel Meredith (who you may have met at Bos2010) has now moved on from the world of PDF development to games development on the mobile platform with his indie games company Bombhead. And their first game for iOS (Dead in site) is now out on ITunes. So when you have finished with PDF files for the day, you too can move on from PDF to killing Zombies.
IDRsolutions develop a Java PDF library, a PDF forms to HTML5 converter, a PDF to HTML5 or SVG converter and a Java Image Library that doubles as an ImageIO replacement. On the blog our team post about anything interesting they learn about.