This library is built on top of entity framework. If offers you to implement full auditing in your application. With the help of this library, we can track all the CRUD operations on database including table names, column names, what was the old value, what's the new value, who changed it, when did it get changed, etc.
It comes with an Affero General Public License.
If you have any queries please reach me at bilal.m.fazlani@gmail.com
Also check the guide here : http://bilal-fazlani.blogspot.in/2013/09/adding-log-audit-feature-to-entity.html