Yahoo！Widget是由雅虎推出的免费并开放源码的桌面应用程序平台。它由Widget引擎和Widget工具两部分组成。能够极大的便利您的网络 操作和完善您的桌面应用。Widget引擎提供了一个Ajax应用程序平台，在Windows和Mac OS X的操作系统环境下都可以使用。安装引擎后就能在此平台上运行各式各样的Widget工具了。
Yahoo! Widgets are small, specific applications that you can run on your Windows or Mac OS desktop. A Widget can do almost anything from displaying a weather forecast to playing a game. Widgets generally sit on your desktop and don't look like applications as we're used to seeing them in a standard window. Instead, Widgets tend to look like small pictures or animations. Yahoo! Widgets help you save time and stay current by bringing an always-updated, at-a-glance view of your favorite Internet services right to your desktop. The Yahoo! Widget Gallery offers over 4,000 desktop Widgets - the most available anywhere online. Yahoo! Widgets is the only major desktop Widgets platform that works on both Windows and Mac OSes.
更新：
http://widgets.yahoo.com/upgrade/演示：
http://cn.widget.yahoo.com/engineshow.htm官网：
http://widget.yahoo.com http://cn.widget.yahoo.com
下载:Yahoo! Widgets 4.5.1v3.1.4.0 简体中文版 - 官方下载：
http://cn.download.widget.yahoo.com/engine/YahooWidget-Install-CN.exe