nlua -- namespace Lua. nlua provides a C++ binding to Lua. The API is simple and reads like the C++ version of Lua`s official C-API.
I can't testify one way or the other how good NLua is. When I found LuaInterface there was as very poor tutorial which didnt' explain much, but at least gave enough examples from which I was finally able to figure out how to access the .NET Framework, including Windows Forms and WPF, from native Lua scripts. The NLua authors claim that NLua " is the bind between Lua and .NET." but haven't yet shown how that is done. It is great to show how embed Lua in C# code, am sure that for many that is helpful. But I am a programmer that does it in the other direction so those examples are meaningless to me. If and when the authors see fit to include examples (a one-to-one replacement of the examples for LuaInterface mentioned above would be a start) so that I can use NLua from native Lua scripts (if you are wondering why I want to do this, consider that many game clients use Lua as the scripting language so adding .NET capabilities to scripts is something to be desired) then I will be able to give a positive review.