Calculator.me
Provides free online tools for budget planners. Offers calculators to figure investment returns and the cost of financing a purchase.

Mortgage Calculator
Use this online tool to calculate an estimate of your home loan payments along with the total cost of ownership including property taxes and other fees.

WPF Charts
SciChart developed and trades WPF Charts licensed products with the help of which you will be able to create the best WPF Charts available. Once you will purchase their licensed product you will get WPF Chart control and become a true professional in creating beautiful and fast WPF charts by making use of the one year support from the team that created this software. There’s not much that you can ask more.
SciChart Ltd
16 Beaufort Court, Admirals Way
Docklands. London. E14 9XL
United Kingdom
sales@scichart.com

WPF applications
If you’re searching for some performance spreadsheet components then SpreadSheet Gear is most likely the final destination of your search. They provide Excel functionalities to WPF applications using FormulaBar controls and the Workbook View. You can customize the Column Header of the Rows to fit any application’s needs.

WPF Charts
Northwoods Software provides the opportunity to build interactive diagrams by using GoXam for interactive WPF and Silverlight Diagrams. Check-out the website for a free testing of samples and learn more about their efficient programs. Their programs are used by huge companies around the world and apply to the extent of being used by aircraft safety engineers.