LilyPond sheet music text editor
The HTML Presentation Framework
EasyABC is an open source ABC editor
Easy Tools of PDF, Image, File, Network, Data, and Medias
LDraw™ editor for LEGO® style digital building instructions.
Another drawing editor for LaTeX with PSTricks & TikZ
image editor
Qt Visual Graph Editor
A minimal Markdown editor desktop app
Vector drawing program for LaTeX using PSTricks
Syntax Tree Drawing Software (Linguistics)
Music score editor
Nash Operating System for Modern Ecommerce
Full features for Dolphin's right click menu on KDE [4.x|5.x]
Virtual paper folding program
Extensible vector graphics editor with Latex text support.
Jade is a cross-platform diagram editor built on the Qt framework.
PostScript editor, PDF and PS Viewer, Converter
Create and edit SVG graphics directly in ownCloud. Based on svg-edit.