Jitsi alternatives

Jitsi
Jitsi is an audio/video Internet phone and instant messenger written in Java. It supports some of the most popular instant messaging and telephony protocols such as SIP, Jabber/XMPP (and hence Facebook and Google Talk), AIM, ICQ, MSN, Yahoo! Messenger.
Jitsi alternatives are:
Pidgin, Linphone, Ekiga, Microsoft Lync, Skype
Here are the latest news about Jitsi:

2015 Atlassian acquires Jitsi video chat maker to power HipChat


Atlassian announced that it has acquired BlueJimp the founder of the open-source chat and video conferencing tool Jitsi. BlueJimp’s technology will replace the current video chat technology that powers Atlassian’s HipChat video features, both in Atlassian’s hosted and on-premise versions. Atlassian promises to continue to support and develop the open source version of Jitsi going forward. Jitsi’s WebRTC-compatible Videobridge product is likely what Atlassian was mostly interested in. It’s a scalable video router that makes it easier for developers to build video chat services with multiple participants. WebRTC, after all, should make it easier for Atlassian to scale its video services and should make it easier — and more cost-efficient — for the company to offer its on-premise version of HipChat.