Santa Monica-based Userplan has extended the firm's chat applications, saying Tuesday that the firm will connect users of its chat application across different web sites, regardless of where they are on the web. According to Userplane, users of its Userplane Chat App can chat with other users logged in anywhere on the chat application, which previously only offered chatting within a specific web site. Userplane said that those sites include MySpace, Facebook, Friendster, Ning, Flux, and Bebo, as well as other social websites using its chat application. The developer of web widgets said that the cross-platform chat is available on any social networking with an open API. Userplane is a subsidiary of AOL.