Proximus is an Electronic System Level (ESL) design environment.
Side-by-side diff viewer, editor and merge preparer
Translates state machine into a target programming language.
Next Scripting Framework (NSF)
Yet Another Diff Tool
A C extension to Tk that provides functionality to modify images
Open Design and Integration Environment
Additional Graphical Classes and Widgets for Tkinter/Ttk
Tcl library of packages focusing on functional principles