CounterPath's X-Lite is the market's leading free SIP based softphone available for download. Combining voice and video calls, Instant Messaging and presence management in an intuitive and familiar interface, X-Lite helps you seamlessly transition from a traditional hard phone environment into the world of Voice over IP. Based on the advanced architecture of eyeBeam 1.5 (CounterPath's retail and carrier-grade softphone), X-Lite is designed to showcase some of the feature rich capabilities available such as superior audio and video quality, zero-touch configuration, IM and presence, and a comprehensive personal address book. Whether you are are having a simple voice conversation, enjoying a video conference call or engaging with friends over IM, X-Lite leads you down the new path of personalized communications Features * Open Standards based next generation telephony client * Session Initiated Protocol (SIP) based signaling for all interactive media sessions * Enhanced Quality of Service (QoS) for voice & video calls * Comprehensive Personal Address Book, including detailed calls lists and history * Zero-Touch Configuration of your audio or video devices * Microsoft Outlook® integration allowing users to import their address book into their eyeBeam contact list * IM and Presence Management * Multi-party and ad hoc Voice and Video Conferencing [IP & PSTN] * Voice & Video Call Recording * Detachable & Sliding Drawers for quick Video and Contact information * Toast pop-ups allowing the management of incoming calls
… More
Edit
works well - some features disabled as it is free
Great stuff. Works fine, looks good and sounds good.
Best free sip phone AFAIK. Sound quality is fine.
X-lite is really cool. I use it with my 1&1 SIP phone number. Works good!
звонилка
Deserves 'great' but the lite version only allows one SIP account, which is pretty cheap from their part, considering they have enterprise apps too. Still its pretty stable, practical and functional. The record call function works realy well too.
All in all, a great SIP softphone I use with Vyke's VoIP service.