Just because nobody has mentioned it yet, there is a file format called zpaq [1] which is incremental and journaling with good support for linux, mac and windo

Just because nobody has mentioned it yet, there is a file format called zpaq [1] which is incremental and journaling with good support for linux, mac and windows. It support multi-threaded compression and error detection and recovery. [1] http://mattmahoney.net/dc/zpaq.html http://mattmahoney.net/dc/zpaq.html