timesheets timesheet time sheet software TIMESHEETS It was also important for AGTI to reduce the time to enter timesheets by their approximately 200 consultants and to generate invoices. In addition, management required flexibility in reporting. The Solution lied in the PSA products that AGTI considered were weak in WIP and too expensive. In Abak, AGTI found an affordable timesheets solution that met their requirements. The Abak system manages timesheets, expense accounts, projects, WIP, invoicing, and integrates with a number of accounting software solutions. Abak was developed by the Groupe AGI (no relation to AGTI) in Montreal, which started selling the timesheets system in 1997. There are now about 300 clients from a variety of industries including accounting firms, engineers, architects, and consulting firms.