Download Yahoo! Messenger 10 Beta : Offline Setup

Official version of the Yahoo! Messenger 10 Beta is released.This new version has a whole new look and feel, along with some great new features that make it well worth the upgrade.Yahoo Messenger is a free service that allows you to see when friends come online and to send them instant messages. It also can alert you to new e-mail in your Yahoo Mail or Yahoo Personals accounts, or when you have upcoming events recorded in your Yahoo Calendar.

Photo Sharing:
Drag-and-drop photos into your IM windows and talk about them like you’re there.

Yahoo! Games:
Challenge your friends to classic Yahoo! Games in the IM window.

IMVironments:
Use interactive themed backgrounds in your IMs.
Find, Add, Share Friends:
Easily get connected with the people who matter most.

Yahoo! Search:
Search from your IM window, and get results both you and your friend can see.

File Transfer:
Drag-and-drop files for real-time sharing and instant notification that they’ve been received.

Address Book:
Synchronize all your contact information.

Stealth Settings:
Make yourself appear online to some and offline to others.

You can download Yahoo Messenger online installer from the official site. I am providing the official offline installer link for download below.
Download Yahoo! Messenger 10 BETA Offline Installer