SimplyFact Pro
Invoicing and stock program for Windows for small and medium-sized businesses, with quotes, orders, credit notes, direct debits, subscriptions, reports, built-in mail and Excel import.
Windows with .NET Framework 3.5, SQL Server Express (2005 to 2012) and Microsoft ReportViewer 2008 SP1.
No longer developed. Updates through the built-in updater keep working for registered licences with a valid update package.