After acquiring Impact Matters, Charity Navigator now includes impact as a criteria for the charities they recommend here. Charity Navigator's criteria for recommending these charities is less clear than for instance GiveWell's criteria, so I'm unsure of how effective these organizations truly are. Any insight is appreciated.
As a side-note, I was really impressed to see now their donation guide have this article on effective giving by Dr. Lucious Caviola and Dr. Joshua Greene, which hits all the usual EA points very well. The article itself is the second link on "Giving 101". (It seems to have been written a couple of months ago)