Econ Technologies today announced it has updated ChronoSync, its automated synchronization and backup application for Mac OS X, to version 3.1. This major update adds complete file archiving capabilities to synchronizations, allowing users to go back in time to restore and view older files. Additionally, this release contains several new features and bug fixes: synchronized files on Tiger now maintain extended attribute metadata and access control lists; Compare and Delete commands have been added in the Trial Synchronization window; the Delete command has been enhanced so files can be deleted immediately, moved to the trash or moved to the Archive; and more. ChronoSync is priced at US$30.00 and a free demo version is available.