Skype is a software application that allows users to make voice and video calls and chats over the Internet. Calls to other users within the Skype service are free, while calls to both traditional landline telephones and mobile phones can be made for a fee using a debit-based user account system. Skype has also become popular for its additional features which include instant messaging, file transfer, and videoconferencing.
ooVoo brings easy video chat to all platforms - our free video chat app is available to download for your computer (Mac, PC), smartphone (iOS, Android) & tablet. ooVoo provides free group video calls with up to 6 people. Record and send video messages. Set up a web chat room for free
Cisco Jabber is an unified communications application. Cisco Jabber lets you access presence, instant messaging (IM), voice, video, voice messaging, desktop sharing, and conferencing. Find the right people, see if and how they are available, and collaborate using your preferred method.
Google Talk is a freeware voice over Internet protocol (VoIP) client application. Available inside GMail. Google Talk mobile clients are also available for the Palm Pre, BlackBerry, Android-based devices and is preloaded on the Nokia N900 smartphone.
fring is a peer-to-peer mobile service enabling live chat, audio and video calls from mobile phones. fring technology is a Mobile VoIP based internet telephony service
Zoho Chat is a Web-based, no need to install, configure, and upgrade anything application. Zoho Chat allows both instant messaging and group chatting.Access Yahoo, Google, MSN, AIM, ICQ, and Jabber IMs all at one place. Conference chat with your contacts from multiple Instant Messaging (IM) networks.
Pidgin (formerly named Gaim) is a multi-platform instant messaging client. It provides the ability to have voice/video conversations using the XMPP protocol (including Google Talk). Further features include support for themes, emoticons, spell checking, and notification area integration.
Miranda IM is an open source multiprotocol instant messaging application, designed for Microsoft Windows. Miranda is free software distributed under GNU General Public License.
Yahoo! Messenger is an instant messaging client and associated protocol provided by Yahoo!. Yahoo! Messenger offers PC-PC, PC-Phone and Phone-to-PC service, file transfers, webcam hosting, text messaging service, and chat rooms in various categories.
ICQ is an instant messaging computer program. ICQ features include sending text messages, offline support, multi-user chats, free daily-limited SMS sending, resumable file transfers, greeting cards, multiplayer games and a searchable user directory.