Dave Sifry is an American software entrepreneur and blogosphere icon known for founding Technorati in 2004,[1][2] formerly a leading blog search engine.

He also lectures widely on wireless technology and policy, weblogs, and open source software.

[3] Sifry cofounded Sputnik, a Wi-Fi gateway company, Linuxcare, and Offbeat Guides.

[1] He has been a founding member of the board of Linux International,[4] and a technical advisor to the National Cybercrime Training Partnership for law enforcement.

Noah is in his local acappella group at UC Davis, The Liquid Hotplates.