X-Lite

X-Lite is a free program from CounterPath for voice communication using VoIP technology and the SIP protocol. With X-Lite, you can use audio and video communications, manage your contact database by assigning contacts to groups (e.g., Work, Family, Friends, etc.), and exchange text messages with your friends and colleagues in real time. The program allows you to communicate with two people simultaneously (in the three-way conference mode) and use presence statuses. It connects to a SIP account from a VoIP provider or an office IP PBX; call encryption (TLS and SRTP) is reserved for the paid Bria softphones. The program supports autoloading, allows you to configure the sound signals and audio devices, and works with several audio and video codecs. Good sound quality in X-Lite is achieved through the use of noise reduction and automatic volume control of audio streams. X-Lite is no longer developed: CounterPath replaced it with Bria Solo, whose free tier continues it.

X-Lite provides free voice and video calls, instant messaging and presence through any SIP-based VoIP service or IP PBX.