Open Source OCR Engine
X-Plane plugin that displays a tablet to aid VR usage
Open source PDF editor
A handwriting notetaking software with PDF annotation support
The Ray Tracing in One Weekend series of books
Node canvas is a Cairo backed Canvas implementation for NodeJS
Prepress preparing tool and PDF editor
A fast DVI, EPS, and PDF to SVG converter
Cross-platform Open-source 2D CAD
Powerful desktop publishing software
Windows eml and mbox viewer.
GPS log file viewer and analyzer
A batch image converter and resizer
An integrated writing environment for creating LaTeX documents
converts PostScript or PDF files to other vector graphics formats
Download books from the hathitrust website in a fast and easy manner
Qt based cross-platform screenshot tool with annotations
Easy-to-use print report library and designer
Scriptable data terminal which supports several interfaces.
Wikipedia offline & more
Draws signalling charts, block diagrams and graphs from text input.
LDraw™ editor for LEGO® style digital building instructions.
Free office suite for working with text, spreadsheets and presentation