I've finally been able to import the InproTK code from our restricted SVN to Sourceforge. This was difficult because the code was living along with documents, code, and other stuff not meant for public circulation (especially not including all the revision information).
It turns out that selectively exporting from a subversion repository is difficult as soon as you have started to rename things. To be precise, you'll have to implement it yourself, or use my implementation svncleaner.pl (which I'll upload shortly). Because I wanted to keep revision numbers identical across the Sourceforge and the proprietary repositories, the import contains many empty revisions. Sorry for that, but it will help us to more easily track bugs in the long run.
Anyway, you can now browse our code with all its history!