ControlMyNikon is described as 'is the THE BEST tethering software for Nikon DSLR's! It has a CRAZY amount of features for an equally CRAZY low price'. There are five alternatives to ControlMyNikon for Windows, Linux and Mac. The best alternative is digiCamControl, which is both free and Open Source. Other great apps like ControlMyNikon are Entangle (Free, Open Source), CaptureGRID (Paid), Nikon Camera Control Pro (Paid) and NKRemote (Paid).