bdsync-manager is hosted on Savannah kindly provided by the GNU folks.
The project page of bdsync-manager provides all development tools.
Get the sources
Take a look at the code repository or check it out anonymously:
git clone git://git.savannah.nongnu.org/bdsync-manager.git
Ask questions, discuss use cases, receive release announcements and help other fellow users on the mailinglist.
Report problems in the support tracker at savannah.nongnu.org.
Alternatively you may want to ask questions on the mailinglist.