Retrospect version 11, which has recently been released, is for sale at The Mac View/Daily Mac View. What is available for sale on the site is the Full and Upgrade Mac versions of the software.A full review of Retrospect version 11 can be found titled “Retrospect’s v11 Upgrade is Impressive”. Further, aspects of Retrospect and its operation can be found in the article “A Robust Backup Strategy”.
Retrospect is solid, mature software that provides additional safety over and above Time Machine to ensure you don’t loose any data. The primary reason this software is available through The Mac View/Daily Mac View is its solid reputation.