LilyPond sheet music text editor
The HTML Presentation Framework
Free and open source vector graphics editor for Windows, Mac, & Linux
Shotcut is a free, open source, cross-platform video editor.
Read, write and edit metadata
EasyABC is an open source ABC editor
Another drawing editor for LaTeX with PSTricks & TikZ
Easy Tools of PDF, Image, File, Network, Data, and Medias
Kindle clippings and Kindle Vocabulary Builder manager
LDraw™ editor for LEGO® style digital building instructions.
Audio Editor
A minimal Markdown editor desktop app
Vector drawing program for LaTeX using PSTricks
A Sysex OSC hex string generator for the X32/X-Air/Wing digital mixers
Syntax Tree Drawing Software (Linguistics)
Music score editor
Nash Operating System for Modern Ecommerce
pgf/TikZ diagram editor
Virtual paper folding program
Extensible vector graphics editor with Latex text support.
Jade is a cross-platform diagram editor built on the Qt framework.
Have fun with images!
PostScript editor, PDF and PS Viewer, Converter