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

• Tcl/Tk 9 is a new major version of Tcl/Tk. See Tcl Developer Xchange for a summary of the most noteworthy changes.

• Subscribe to the Fosstodon @tcl_tk or X @TclLang feeds for happenings and interesting stuff from the Tcl world!

• For monthly virtual meetups that anyone is free to join, see Monthly Virtual Meetup or the Europe-centric Monatlicher virtueller Tcl Stammtisch.

• See Tcl Conferences for upcoming and past Tcl conferences, the latest of which was held in Vienna on July 16 & 17, 2026.

• Tcl/Tk 9.1b0 (30 June 2026) Released. Downloads

• Tcl/Tk 9.0.4 (27 June 2026) Released. Downloads

• Tcl/Tk 8.6.18 (12 May 2026) Released. Downloads

Recent changes