ActiveTcl is the complete, quality-assured and ready-to-install Tcl distribution for AIX, HP-UX, Linux, Mac OS X, Solaris, and Windows.

ActiveState is committed to making Tcl easy to install and use on all major platforms. This release of ActiveTcl brings you the most stable release of Tcl in binary form. It also includes several of the most popular extensions pre-compiled and ready to use. Beginning with this release, we distribute and install the demos and examples of the various packages.
What's included
Complete ActiveTcl Package
Tcl
Binary of core Tcl distribution
Expect for Windows
Cross-platform system administration and test automation
Extensions
Popular extensions, pre-compiled
Easier installation
Self-extracting archives for all platforms
Complete online documentation

Plus the latest stable Tcl core and several extensions, including:
Tk
[incr Tcl/Tk] and iwidgets
Tcllib and Bwidgets
tktable
tkcon
TclX
expect
Img
TclXML and TclDOM
TclSOAP
Snack
TkHTML
XOTcl
Oratcl