Thread envisions that some devices will support only its connection, while larger devices will also have Wi-Fi to connect directly to the Internet.
For their part, the Thread backers say their effort deals with the specific radio and networking technologies that connected devices should use, while OIC and AllSeen work at the application layer.
"We're not trying to fix the whole problem space," says Nest product marketing employee and Thread Group president Chris Boross. "We're targeting just the networking implementation."
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In theory, that means that AllSeen and OIC could even work in conjunction with Thread, though Boross said they haven't actually talked to either of those camps.
"We felt we needed to do it in our own little group and then work with others," Boross said.
—By Ina Fried, Re/code.net.
CNBC's parent NBC Universal is an investor in Re/code's parent Revere Digital, and the companies have a content-sharing arrangement.