toc can be downloaded from
the SourceForge downloads page.
The older (pre-2007) toc code can be
found in CVS,
whereas the toc2 code can be
found in Subversion.
Here is the SVN command for pulling the toc2 tree:
svn co https://toc.svn.sourceforge.net/svnroot/toc/trunk toc2
That will check out the head of the repository to ./toc2.
There is some (in-progress) documentation in the toc2/doc/
subdirectory, in OpenDocument format. The tree itself is a sample project
which hosts the toc2 tools. The actual toc2 tools live in the toc2 subdirectory
of that tree. The sample project can be used as a skeleton for setting up a new project,
and demonstrates how to use various features of toc2, such as building C/C++ binaries