ecobee - The smarter wi-fi thermostat
Vivint Element Smart Thermostat - A smart wireless thermostat that blends comfort and savings
Netatmo - Control your heating wherever you are
Nest Thermostat (3rd gen) - A slimmer, sharper, sexier thermostat
Elgato Eve Thermo - The Elgato Eve Thermo isn't a house-wide thermostat - instead it connects to individual heating units and controls them separately instead of single point of interaction.
tado Smart AC Control - Control any AC from anywhere with your phone