Where can I find the System.Linq.Dynamic dll?

I am looking all over for this dll but can't find it anywhere? anyone know where to get it and can help me? Thanks!

What is Dynamic Linq?

The Dynamic LINQ library exposes a set of extension methods on IQueryable corresponding to the standard LINQ methods at Queryable, and which accept strings in a special syntax instead of expression trees.

Is Dynamic Linq safe?

And Dynamic Linq is actually composed from strings, therefore it is potentially prone to attack by injection. Obviously, the attacker will have to be aware of the fact that you are using DynamicLinq and could attack only preparing the data so it results in valid malicious Dynamic Linq query.

Now it's available via NuGet gallery too.