OctoPrint is the snappy web interface for your 3D printer
Optimized firmware for RepRap 3D printers based on Arduino platform
OpenPrinting CUPS Sources
Client/server side PDF printing in pure JavaScript
A Label Printer Application
Zasilkovna.cz PHP library supporting SOAP and REST API + custom Label
Haskell pretty printer
Powerful desktop publishing software
Hewlett-Packard's Linux imaging and printing software
Free Java Reporting Library
Reporting tool, libraries and designer
Easy lead sheets from text input
Easy-to-use print report library and designer
Insert and manage Linux computers in AD
Modular XSL-FO Implementation for Java.
Bar Code (1D or 2D) generator in pure Ada
Gestione dei Registri Parrocchiali, Management of Parish registers
Every Printshop must-have Tool for professional prints