Notes about the MM3 file extension:
Incorrect file associations could be the result of underlying issues within your PC system. As such it is highly recommended to scan your PC for invalid registry entries, unused processes and other unfavourable system settings to identify slowdown issues.
The MM3 file type is primarily associated with 'Mortgage Minder' by CW Technical Services. Mortgage Minder supports variable interest rates, Canadian mortgage calculations, ability to add any additional principal amounts, a payment/rate matrix, and a "Payoff Date" wizard among other features.