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Tcl Conference News

The 2025 European OpenACS and Tcl/Tk conference will be in Bologna/Italy/Europe on July 10 & 11 2025.

Please visit the main conference page for details.

Older conference info

Latest Software Releases

Tcl/Tk 9.0.1 Source
Tcl/Tk 8.6.16 Source
All Tcl/Tk Downloads

ActiveTcl Multi-platform and commercially supported
BAWT Multi-platform
Magicsplat Windows
IronTcl Windows

Tklib 0.8 Jul 6, 2024
Tcllib 2.0 Sep 26, 2024

Wiki Category: Distributions

Welcome to the Tcl Developer Xchange!

Join the many thousands of software developers who are already more productive with help from the Tcl programming language and the Tk graphical user interface toolkit.

Tcl (Tool Command Language) is a very powerful but easy to learn dynamic programming language, suitable for a very wide range of uses, including web and desktop applications, networking, administration, testing and many more. Open source and business-friendly, Tcl is a mature yet evolving language that is truly cross platform, easily deployed and highly extensible.

Tk is a graphical user interface toolkit that takes developing desktop applications to a higher level than conventional approaches. Tk is the standard GUI not only for Tcl, but for many other dynamic languages, and can produce rich, native applications that run unchanged across Windows, Mac OS X, Linux and more.

KomodoIDE Tcl debugging, code intel, unit testing + more

Learn more

Get Tcl/Tk (9.0) (8.6)

Browse the Tcler's Wiki

Read the reference pages and other documentation

Core Development

A wide variety of developers contribute to the open source Tcl and Tk core, which is hosted at core.tcl-lang.org. The Tcl Core Team (TCT) helps steer this development through mechanisms like Tcl Improvement Proposals (TIP's) and the core mailing list.

Read More about how the Tcl/Tk core is developed, and how you can help.

Tcl/Tk Community

The vibrant Tcl user community provides a variety of support resources to help working with Tcl/Tk. Among others, the Tcler's Wiki provides a constantly updated set of tips and tricks, while comp.lang.tcl remains the best forum for Tcl/Tk discussions. Beyond that we also have IRC, Slack, and Twitter channels.

Read More about these and other useful community resources.