Tarsnap is described as 'Work on Tarsnap began in September 2006 when the author, Dr. Colin Percival, decided that he wanted a better online backup service than was presently available. After slightly more than two years of development and private beta testing, Tarsnap officially entered public beta in' and is a Cloud Storage service in the backup & sync category. There are more than 50 alternatives to Tarsnap for a variety of platforms, including Windows, Web-based, Mac, iPhone and Android apps. The best Tarsnap alternative is Dropbox, which is free. Other great apps like Tarsnap are Google Drive, Duplicati, Box and Koofr.