CMAS - Context Menu Aggregate Search (右键聚合搜索) is a free Chrome add-on developed by SiyiLee. It falls under the category of Browsers and the subcategory of Add-ons & Tools. This program integrates multiple search engines into the Chrome right-click menu, providing users with quick access to the main pages of these search engines.

With CMAS, users can easily perform searches using various search engines without leaving their current tab. By simply right-clicking on a selected word or phrase, they can choose from a list of supported search engines, including Google, Bing, Yahoo, and Baidu, among others. This eliminates the need to manually open a new tab and navigate to each search engine's website.

Another convenient feature of CMAS is its support for word search. Users can highlight a word on a webpage and instantly search for it using their preferred search engine. This saves time and effort, especially when conducting research or looking up unfamiliar terms.

Overall, CMAS-聚合搜索 is a useful tool for Chrome users who frequently perform online searches. Its integration with the right-click menu and support for multiple search engines make it a convenient and time-saving solution for quick information retrieval.