Open Source Solid Modeling CAD
Multi-platform disk cataloguing utility written in java.
Zoomable user interface (ZUI) with file manager, file viewers and more
Cross Platform GUI Toolkit
SIMD-accelerated libjpeg-compatible JPEG codec library
music composition and notation software, audio to midi converter
PHIGS (Programmer's Hierarchical Interactive Graphics System)
Very Powerfull Crossplatform Qt Based Music Note Editor[Still Planing]
DuMP3 is a duplicate and similar file finder.