ADO.NET, MS SQL SERVER, Windows Forms Applications(VB and C#), Visual FoxPro, ASP.NET, WCF Web Services, Windows Mobile, and Android 2.2 & 3.0.
When you sort all of Stackoverflow's members alphabetically, I am last.
Check out my Android calculator. It can perform calculations in any numeral system from base 2 to base 36. It is free.
Any Base Calculator