Mac: Free Most popular Chat downloads

Yahoo Messenger (Mac), download at http://messenger.yahoo.com/mac

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Operating Systems: Mac OS - (Instant Messaging: Send text messages in real-time to your friends on Yahoo! Messenger. Join a chat room to meet new friends while you discuss your favorite topics. Make a voice call to another Yahoo! Messenger user for free (microphone and speakers/headset required.) Get a new phone number that allows you to receive calls in Yahoo! Messenger (Phone In account required). Send text messages from Messenger to your friends mobile phones for free. Plug in your webcam to share live video with your friends on Yahoo! Messenger. Instant message with many friends at once in a conference room (includes voice capabilities, where available. IM with friends who use Windows Live™ Messenger, Reuters Messaging, and Lotus Sametime — right from Yahoo! Messenger. )

aMSN, download at http://www.amsn-project.net

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Operating Systems: Mac OS X 10.5 Intel, Mac OS X 10.4 Intel, Mac OS X 10.5 PPC, Mac OS X 10.4 PPC, Mac OS X 10.3.9 . - (aMSN is an free open source MSN Messenger clone, featuring: Offline Messaging. Voice Clips. A New Login Window & Contact List (As of 0.97). Display pictures. Custom emoticons. Multi-language support (around 40 languages currently supported). Sign in to more than one account at once. File transfers. Group support. Normal, and animated emoticons with sounds. Chat logs. Event alarms. Webcam support. History in color. Ability to autoclose the filetransfer window when it is finished. New plugins log window (Alt-P). Plugins compatible with supported languages. Faster loading skin window. Skins in chatwindow. Resizable chatwindow bottom. When you add a new user, you can define in which group you want to add them. When a contact change status, the top of the chat window changes color ( green for away, grey for offline, etc.). New panel GUI to alert when there's a new aMSN version. Possibility to download the new release directly by aMSN. Automatically update language files and plugins from the web. New gui for deleting users (also possible to block on deletion). Possible to add notes for each user (XML). Support for MSN Mobile service. Tabbed windows so you can group conversations using tabs. Status is displayed inside a frame, so it won't dissapear when you scroll. Display picture in notification alert (like MSN 7). Statistics for history (logging). Now possible to choose any state for your login status (before it was only possible to login invisible or online).

iChat AV 2.1.3, download at http://www.apple.com/downloads

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Operating Systems: - Mac OS X v10.3 or later - (Conference Recorder for iChat AV 2.1.3. Finally, an easy way to record your iChat audio and video chats. Conference Recorder is an add-on for iChat AV which automatically transforms your conference sessions into QuickTime movies. Conference Recorder is great for lessons, interviews, video podcasts or just having fun. Now you’ll be able to replay those treasured memories for years to come. Log video conferences for future viewing. Tape both sides of an audio conference with perfect clarity. )