High Quality Content by WIKIPEDIA articles! X-Lite is a proprietary freeware VoIP soft phone that uses the Session Initiation Protocol. X-Lite is developed by CounterPath, a Vancouver based software company. THere are currently two major releases of X-Lite with radically different interfaces. X-Lite 2.0 for Linux, which uses the old X-Pro code base, and X-Lite 3.0 for Windows and Mac OS X which uses the eyeBeam code base. X-Lite 2.0 is audio only. X-Lite 3.0 has audio, video, and instant messaging as well as being presence-capable. IN 2005, the product was Internet Telephony magazine's Product of the Year. THe product complements other non-free products offered by the company.