The Nest Thermostat won over legions of users with its Apple-like industrial design, Web 2.0 design user interface, online access features, and a multitude options previously unseen from a thermostat. Unfortunately, the $250 price tag is still high enough to warrant pause. But perhaps because of the heat Nest turned up on the competition, there are now many more options for a web accessible thermostats available to choose from...
3M Filrete Wi-Fi Remote Programmable Touchscreen Thermostat
3M's programmable thermostat can be controlled from your computer or smartphone with an included Wi-Fi module. The system's filter indicator helps remind users to change the filter, which is often the most forgotten system maintenance task.
Although not quite as design sexy as the Nest, the Honeywell does offers 7 day programming, intelligent alerts, energy savings scheduling, and free smart phone apps compatible with iPhone, iPad and Android devices at less than half the price of a Nest. Reviews online rave about the features, but some note installation may require the aid of an electrician or HVAC installer.
Homewerks Radio Thermostat CT-30-H-K2 Wi-Fi Thermostat
The Radio Thermostat CT-30-H-K2 offers touchscreen controls, 7 day programming, 4 independent periods, and control for 2 stages of heat and cool. Free web and mobile applications let you control your home from anywhere with an internet connection. Best of all, it's under a hundred bucks!
CyberStat CY1101 Wireless Internet Connected Programmable Thermostat
The prices just keep getting better and better, although to be fair, the products design and features do begin to reflect the cost. But if it's functionality you're after, the CyberStat thermostat offers many of the same features as the models above for around $75 with a glowing 4.3 out of 5 stars on Amazon.
(Images: as linked above)