Open Source Speech Recognition Engines

Check out Carnegie Mellon University’s open source speech recognition engines at
http://cmusphinx.sourceforge.net/

Libraries for PDF Creation

The ReportLab Toolkit is one of the most full-featured libraries for PDF creation available. In addition, the toolkit includes platform-independent graphics .

Check it out here http://www.reportlab.org/

Also check out http://code.google.com/p/doctopdf