The Mozilla Application Suite (originally known as Mozilla, marketed as the Mozilla Suite, and code named Seamonkey) is a cross-platform integrated Internet suite. Its development was initiated by Netscape Communications Corporation, before their acquisition by AOL. It is based on the source code of Netscape Communicator. The development was spearheaded by the Mozilla Organization from 1998 to 2003, and by the Mozilla Foundation since 2003. The Mozilla Suite is composed of several main programs: Navigator (a web browser), Communicator (Mozilla Mail & Newsgroups), a web page developer (Mozilla Composer), an IRC client (ChatZilla) and an electronic address book. Also included are tools to synchronise the application with Palm Pilot devices, and several extensions for advanced Web development including the DOM Inspector and Venkman (a JavaScript debugger). Versions 6 and 7 of the Netscape suite were based on the Mozilla Suite.