A universal instant messaging (IM) program
Img is a collection of format handlers for the Tk photo image type.
Side-by-side diff viewer, editor and merge preparer
Cross-platform, scientific graphics plotting library
advanced disk information utility
Platform-agnostic GUI supporting CVS, Subversion, Git, and RCS
Translates state machine into a target programming language.
Draw vector graphics to scale using a descriptive language
Virtual X-Ray Imaging Library on GPU
Doing 3D with Tcl
A powerful editor and graphical debugger for code written in Scilab
Cross-platform C++ library for use as a default application framework.
awdark and awlight themes for Tk, scalable themes.
Programming language with expressive power and a simple implementation
An alternative menu system for Tcl