Slack
Slack brings all your communication together in one place. It’s real-time messaging, archiving and search for modern teams.
http://www.slack.comJostle
Jostle’s cloud-based simple intranet solution; the next-generation intranet that improves employee engagement and internal communications.
http://www.jostle.meSkype
Stay in touch with your family and friends for free on Skype. Download Skype today to chat and call on desktop and mobile.
http://www.skype.comWhatsApp
WhatsApp Messenger :: cross-platform mobile messaging app for iPhone, BlackBerry, Android, Windows Phone and Nokia. Send text, video, images, audio for free.
http://www.whatsapp.comWe Chat
Available for all kinds of platforms; enjoy group chat; support voice,photo,video and text messages.
http://www.wechat.comICQ
http://www.icq.com
Zopim
Award-winning live chat software solution. Chat with visitors in real-time and increase conversions. Sales and support made easy for businesses. Free 14-day ...
http://www.zopim.comHipChat
HipChat is hosted group chat and video chat built for teams. Supercharge real-time collaboration with persistent chat rooms, file sharing, and screen sharing.
http://www.hipchat.com