Roadkill .NET wiki is a lightweight but powerful Wiki engine built using .NET 4.0, ASP.NET MVC 3 with Razor, jQuery and
It uses creole Wiki syntax by default but also supports Media Wiki syntax and Markdown.
It's themeable, well documented, supports Active Directory authentication and is extremely easy to use.
These details are provided for information only. No information here is legal advice and should not be used as such.