Open Source Solid Modeling CAD
Multi-platform disk cataloguing utility written in java.
Zoomable user interface (ZUI) with file manager, file viewers and more
SIMD-accelerated libjpeg-compatible JPEG codec library
Cross Platform GUI Toolkit
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.