The best way to access the Tourk source code is to use CVS, the version control system.
For the general public, you want a CVSROOT of
:pserver:anonymous@cvs.tourk.sourceforge.net:/cvsroot/tourk
Login, and use cvs checkout to grab the code. The available modules are
If doing all that seems like hard work, use the Sourceforge CVS browser instead.
To make full use of the CVS system, you should get yourself a sourceforge account.