GPS log file viewer and analyzer
Easy-OCR solution and Tesseract trainer for GNU/Linux
Music score editor
General-Purpose PDF Library for Java and .NET
Jade is a cross-platform diagram editor built on the Qt framework.
jchart2d is a real-time charting library written in java.
Generate CD/DVD PDF-printable covers !
Create and edit SVG graphics directly in ownCloud. Based on svg-edit.