Technorati is an Internet search engine for searching blogs. By June 2008, Technorati was indexing 112.8 million blogs and over 250 million pieces of tagged social media. The name Technorati is a blend of the words technology and literati, which invokes the notion of technological intelligence or intellectualism.
Technorati was founded by Dave Sifry, with its headquarters in San Francisco, California, USA. Tantek Çelik was the site's Chief Technologist.
Technorati uses and contributes to open source software. Technorati has an active software developer community, many of them from open-source culture. Sifry is a major open-source advocate and was a founder of LinuxCare and later of Wi-Fi access point software developer Sputnik. Technorati includes a public developers' wiki, where developers and contributors collaborate, also various open APIs.
The site won the SXSW 2006 awards for Best Technical Achievement and Best of Show. It was nominated for a 2006 Webby Award for Best Practices, but lost to Flickr and Google Maps. Technorati was recognized as one of the “2010 Hottest San Francisco Companies” by Lead411