ItsNat is an innovative open source (dual licensed, GNU Affero General Public License v3/commercial license for closed source projects) Java AJAX Component based Web Framework. It offers a natural approach to the modern web development. Why natural? ItsNat leverages the old tools to build the new AJAX based Web 2.0 applications: pure (X)HTML templates, pure W3C DOM... and pure Java!. ItsNat is server centric using a unique approach called TBITS, "The Browser Is The Server": ItsNat simulates a Universal W3C Java Browser at the server, with ItsNat the server mimics the behavior of a web browser, containing a W3C DOM Level 2 node tree and receiving W3C DOM Events.