Image Toolbox is an powerful picture editor, which can crop
LilyPond sheet music text editor
An extensible Markdown Editor, Viewer and Weblog Publisher for Windows
The HTML Presentation Framework
Create, Edit, Delete, Organize , Convert, Export, Secure & Sign.
EasyABC is an open source ABC editor
Android Manga reader with Japanese OCR and dictionary capabilities
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
svg editor: Easily create documents for math, physics, chemistry...
image editor
Qt Visual Graph Editor
A minimal Markdown editor desktop app
Free Screenshot Tool
Vector drawing program for LaTeX using PSTricks
Best tool to merge, rearrange, rotate, delete, compress PDF files
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