A smart framework and extensions to create powerfull applications using .NET 2.0 or later (3.0, 3.5, 4.0 etc.) and C#. MS SQL 2000, 2005 and 2008 and soon MySql 5+ can be used as database but it's not required for small apps.
These details are provided for information only. No information here is legal advice and should not be used as such.