Jitsi is an instant messaging that supports multiple accounts. In other words, it gather in a single window your Windows Live Messenger, Facebook Chat, Yahoo Messenger, GTalk contacts and so forth so that you can chat with them without running several programs simultaneously. With this software, you can chat with your contacts, send emoticons, transfer files, make calls and even a video conference with multiple participants at once. In addition, to secure your calls, Jitsi uses the ZRTP and SRTP encryption protocol. As additional features, this software supports drag and drop, the notification on the taskbar, integration into Microsoft Outlook and saves call histories, etc.