Debuting March 9, 1998, Yahoo Messenger reaches an estimated 22 million users around the world and is the third most popular instant messaging client, according to Nielsen Netratings. With Yahoo's advertiser-supported IM client software and apps, users can send and receive messages and multimedia on their network, plus Facebook Chat, Twitter, Windows Live Messenger and more.

Yahoo Messenger also features video and audio chat, cheap PC-to-phone calling, photo and file sharing, social media integration, multiplayer gaming, buddy icon support, chat rooms and more.

Yahoo Messenger 11.5 for PC

With the original Yahoo IM client, users can connect with friends on their favorite networks and social media sites, including Facebook Chat integration, Twitter and more. Plus, check out free PC-to-PC and cheap PC-to-phone calling, webcam chat and head-to-head gaming action right on your desktop.
Free Download: Yahoo Messenger Download

System Requirements

• Windows XP, Vista or higher
• Web browser
• Active Internet connection
• Microphone, speakers for audio chat
• Webcam for video chat

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Yahoo Messenger for Mac 3.0

Enjoy many of the same popular features of Yahoo Messenger for your Mac, plus connect with friends on Lotus Sametime, Lync Communicator Server and Windows Live Messenger. Also includes iTunes track sharing integration, IM history archiving, free text messaging, emoticon support and more.
Free Download: Yahoo Messenger for Mac Download

System Requirements

• An Apple-branded Mac computer
• Mac OS X 10.4 or later
• Internet connection
• Yahoo Messenger account(s)
• Speakers for audio
• Webcam for video chat

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Yahoo Messenger for the Web/Yahoo Mail

Enjoy instant messaging without a download using Yahoo Messenger for the Web, now available inside your Yahoo Mail account. Get started now.
System Requirements

• Web browser (Internet Explorer 8 or later, Firefox, Chrome, or Safari)
• Internet Connection

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Yahoo Messenger for Android App

With Yahoo's Android app, users can connect in a variety of ways already available to those on PC and Mac, including video and voice calling, instant messaging and more with Yahoo, Windows Live Messenger and more. Requires additional installation of Yahoo Messenger Voice & Video Add-on for Android.

Free Download: Yahoo for Android App

System Requirements

• Android 2.0.1 and up
• 4.0MB available space
• Mobile web access

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Yahoo Messenger for iPhone App

Yahoo Messenger for iPhone includes many of the same features enjoyed by users on the other platforms, including webcam chat, file sharing, social networking integration, free text messaging, access to Windows Live Messenger friends and more.

Free Download: Yahoo for iPhone App

System Requirements

• iOS 4 and above
• iPhone (v2.0 or later), iPod Touch, iPad
• 17.4MB available space
• Mobile web access

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Yahoo for SMS

Don't have a smartphone? No problem! Get access to your favorite Yahoo, Windows Live Messenger friends and more directly in your SMS text messaging inbox. Yahoo for SMS is free to use, but requires access to a text messaging plan. An unlimited plan is highly recommended for use with this feature.

Get Started: Yahoo for SMSMore »