Download Tcl/Tk 8.4.20

Source Releases

Each of these files is explained in more detail below.

Tcl Sources

tcl8.4.20-src.tar.gz Gzip format tcl8420-src.zip Zip format
Tk Sources

tk8.4.20-src.tar.gz Gzip format tk8420-src.zip Zip format

Other versions of the source distributions are available at SourceForge.

For other ways to obtain Tcl/Tk (such as binary distributions), see the main Tcl/Tk page.

The source releases include make files for Windows, Unix and Xcode project files for Mac OS X.

If you're running on a platform other than the ones listed above, or if you want to make modifications to Tcl and Tk, you'll need to retrieve the source releases.

Once you've retrieved the sources, click below for instructions on how to configure, compile, and install Tcl/Tk.

How to Compile Tcl Source Releases

Unix (including Mac OS X)

You'll want both Tcl and Tk sources; choose the and gzipped tar format. The files listed under the Windows sources contain the same information but are in ZIP format.

Gzip'ed Tar Files

Extract gzip'ed archives with this UNIX command line:
gunzip < file.tar.gz | tar xvf -

Windows

If you have downloaded the Unix version of these files, there is no need to also download these versions since these files are identical but in ZIP format instead of compressed tar.