Boar

Boar aims to be the perfect way to make sure your most important digital information, like pictures, movies and documents, are stored safely.

Boar makes it possible for you to restore any or all of your files from any point in time. Boar makes it easy to maintain verified backups of your data, including file history. Boar imposes no limits on file or repository sizes. Using boar is an effective way to prevent data loss due to human or machine error.

Source code https://bitbucket.org/mats_ekberg/boar/