collective.recipe.backup is basically a port of ye olde instancemanager's backup functionality. That backup functionality was coded mostly by Reinout van Rees and Maurits van Rees, both from Zest software
Creating the buildout recipe was done by Reinout with some fixes by Maurits.
The snapshotrestore script was added by Nejc Zupan (niteoweb).
The fullbackup script was added by Tom 'Spanky' Kapanka.
Archive blob backups feature added by Matej Cotman (niteoweb).