A circuit simulator with graphical user interface (GUI)
A planetarium software that shows a 3D simulation of the night sky
An open source software-defined GNSS receiver
A Logo programming environment for Microsoft Windows
SUMO is a microscopic, multi-modal traffic simulation.
Wikipedia offline & more
Satellite tracking software
Educational Linux Distribution
C++ libraries for manipulations in non-Euclidean geometry
Free music notation & composition software
a Bible study tool
LDraw™ editor for LEGO® style digital building instructions.
(X)BNF simple and clever translation grammar compiler
Syntax tree editor for rapid annotation of existing text
Qt Visual Graph Editor