So, there are
as C# drivers for MongoDB available.
Which one of them is the most mature and stable one? Why would you choose one over the other two?
Are they production ready?
Since this question was answered 10gen have released an official MongoDB C# driver, and although it isn't the most mature C# driver in terms of age, with 10gen behind it it may end up as the most up to date.
It is more low level than the mongodb-csharp driver (no Linq support at the moment) but we haven't found that to be a problem. We moved to the official driver from mongodb-csharp recently on a project (that isn't in production yet) for the following reasons: