From Spicer-Baer Associates:
PerpetualWorkbook is a spreadsheet networking application designed to create and manage the updating process of any working Excel spreadsheet used for budgeting or forecasting. Extend the collaborative process of updating the master file spreadsheets on your existing budgeting or forecasting software. PerpetualWorkbook provides the following features: Remote updating of master workbooks, rebuild populated workbooks, and synchronize groups of workbooks. Perform team management of finance workbooks using the secure network database mode. Manage Corrupted Templates - feature now has a 'wrap-around' method of processing from the Windows interface. The Corruption error gets written to the Errors table, the update is abandoned and the user file is marked 'Corrupted' and replaced. Shares common database with Excel Add-in (PerpetualWorkbookXL) to create and manage new workbooks.