Is there a .NET C# version of the OS X/iOS CoreData? I was reading this post, but it needs to be for C# .NET.
At the time of writing this question, Nhiberate was what we ended up going with as an ORM. Currently, for most projects, we are using Dapper
Update 2022:
The Entity Framework has evolved quite a bit since this question was asked and could certainly fill the role that I was looking for at the time of question.