As far as I know the age old instinct not to die was applied here -> the developers of the open source software realized that if you are good at something, then you should not do it for free.
Your should also distinguish between free software and open source software projects / repositories.
As far as I know this is no longer open source software. But you might be able to download the free sources and maintain it for newer releases of SAP for yourself or create a real open source platform for the software.
I will lock this thread now as it is old and not available anymore.
Cheers,
Julius