Welcome to the Tcler's Wiki!

What is Tcl?

Tcl is a simple-to-learn yet very powerful programming language. Its syntax is described in just a dozen rules, but it has all the features needed to rapidly create useful programs in almost any field of application - on a wide variety of international platforms. See more about Tcl at What is Tcl

What is Tk?

Tk is a graphical toolkit for Tcl. It allows you to develop graphical applications that run on Windows, Linux, MacOS X and many other platforms. And not just from Tcl - Tk can be used from many languages including C, Ruby, Perl, Python and Lua. See more about Tk at What is Tk

Tcl Community News

  • Welcome to the latest evolution of the Tcler's Wiki. For more information about the new features see About Nikit.
  • The 25rd Annual Tcl/Tk Conference (aka Tcl2018) is taking place this week October 15-19 2018 in Houston, Texas, USA.
  • The 14th European Tcl/Tk User Meeting (aka EuroTcl 2018) took place July 6-8 2018 in Munich, Germany.
  • Tcl/Tk 8.6.8 Released! The Tcl Core Team is pleased to announce the 8.6.8 releases of the Tcl dynamic language and the Tk toolkit. We would like to express our gratitude to all those who submit bug reports and patches. This information is invaluable in enabling us to identify and eliminate problems in the core. Tcl/Tk 8.6.8 sources are freely available as open source from the Tcl Developer Xchange. See also the Tcl/Tk 8.6.8 highlights and changes.
  • has set up a bounty program for improvements to Tcl and certain Tcl packages.

Recent changes

October 19, 2018
Twenty-fifth Annual Tcl/Tk Conference (2018)
October 18, 2018
Tcl Tutorial Lesson 8
Improvements to the tutorial
Tcl Tutorial Lesson 3
Babylonian Cubic Equation Problem and eTCL demo example calculator, numerical analysis
Babylonian Square rule for Trapezoid Area and eTCL demo example calculator, numerical analysis
Directory entry megawidget