百度助手 is a free Chrome add-on developed by Robin Lin that provides users with a convenient way to switch between Baidu and Google search engines using keyboard shortcuts. With this add-on, users no longer need to retype their search query when switching between the two search engines, as the keyboard shortcuts can be customized to suit their preferences.

One of the standout features of 百度助手 is the addition of Baidu search functionality to the right-click menu. This extension is specifically designed for users who frequently use Baidu search, as it adds a search button to the top-level menu, making it easily accessible and ideal for high-frequency Baidu users.

Notably, 百度助手 only consumes a small amount of memory when performing a right-click search, ensuring that it doesn't impact the overall performance of the browser when not in use.

Overall, 百度助手 is a useful browser add-on for those who frequently switch between Baidu and Google search engines and prefer quick access to Baidu search from the right-click menu.