Name: Metro Mortgage Calculator
License: Commercial (GPL)
Product demo page: http://getbutterfly.com/wordpress-plugins/mortgage-calculator/
Product info page: http://getbutterfly.com/wordpress-plugins/mortgage-calculator/
Screenshot: http://getbutterfly.com/wp-content/uploads/2012/08/theme-light.png
A modern UI mortgage calculator with email functions, multiple themes, results template and easy integration. It calculates standard mortgage payment, mortgage rate based on payment and term, and APR based on payment, term, and fees paid.
It can be used either via shortcode or as a widget.