PDFlib
Some highlights of the new features in PDFlib 9:
create PDF/A-2 and PDF/A-3 for archiving
create Tagged PDF and PDF/UA for accessibility
many Tagged PDF enhancements, e.g. automatic table and artifact tagging
create PDF/VT for variable and transactional printing
import Scalable Vector Graphics (SVG)
font handling and text output improvements
PDFlib+PDI: import tags and layer definitions
PPS: new Block type for vector graphics
PPS: create PDFlib Blocks programmatically or import existing Blocks
PDF Object Creation API (POCA) for creating Document Part Metadata (DPM) for PDF/VT, PDFlib Blocks, and Rich Media
create multimedia annotations with Flash, Sound, Movie, 3D
many other enhancements in existing features