Img is a collection of format handlers for the Tk photo image type.
Earth orbits and satellite coverage display in 3D on your laptop.
Doing 3D with Tcl
graphical front-end for editing/transposing abc music files
Open Source Solid Modeling CAD
A loudspeaker phase linearization, EQ and filtering tool
Free yourself
A C extension to Tk that provides functionality to modify images
Universal graphics translator
Simple musical track editor + Tools
A Tcl/Tk widget for OpenGL rendering.