AdExtent (formally Semantinet) was an Israeli startup company dedicated to developing RTB Display technologies for various ad platforms.
History
The brainchild of Tal Muskal, who initially intended to create a development platform for the seamless integration of data, Semantinet was incorporated as a company in December 2006, after receiving a preseed investment from Yossi Vardi. The company completed hiring its development team in January 2008, and by April the same year the team completed development of the company's initial semantic web engine. Three months later, in July 2008, Semantinet released its first product, the Headup client, as a private Alpha.[1] In October the client was deemed ready for Beta[2][3] and in February 2009 it was approved for distribution via Mozilla's Firefox Addon directory.
In March 2009 Semantinet began the transition from client to server based solutions and in July it started a pilot of a semantic web WordPress plugin for bloggers.