An abstraction of the data layer and handling common data access functionality.
If you want to use DotNetToolkit.Repository for the first time, the Getting Started guide will help you.
The DotNetToolkit.Repository includes basic repository objects for handling the data access layer. The DotNetToolkit.Repository also supports Specifications, FetchStrategies, Services and Transactions (Unit Of Work), caching, and even allows for logging activities within the repositories. The ability for executing raw SQL queries is even allowed.
If you want more details about the project, please checkout the project wiki.