isp business / commercial software for linux

RealChat combines a high performance Java chat server with a lightweight Ajax chat client. You get tabbed chat, private rooms, customizable appearance, web-based configuration, and more! Easily integrate RealChat with your user database so members can use their existing profiles. Ready-made plug-ins available for phpBB, Invision PB, vBulletin and more. Completely private-brand the software, including your own identity in the "About" section. Host multiple independent virtual chat servers on a single server. RealChat ISP Edition comes with five virtual servers licenses included. Additional vServer licenses may be purchased to increase the number of virtual hosts allowed.

Requirements: A dedicated server or unrestricted shell account on a shared server.