Volume Manager is a free Chrome add-on developed by zhangbohun. It falls under the category of Browsers and is classified as an Add-on & Tools subcategory. This handy tool allows users to easily manage the volume of each tab in the Chrome browser.

With Volume Manager, users have the option to control the volume in two different modes. The first mode is the H5 mode, which supports HTML5 standard audio and video. In this mode, the add-on can automatically remember the previous volume configuration. However, it is important to note that H5 mode does not support Flash and other multimedia.

The second mode is the Browser Native mode, which supports Flash and other multimedia. Unfortunately, due to the limitations of the Chrome browser, automatic configuration cannot be implemented in this mode. Users will need to manually open the extension page to load the configuration.

Overall, Volume Manager is a useful tool for those who want more control over the volume of individual tabs in the Chrome browser. Whether you prefer the H5 mode for HTML5 content or the Browser Native mode for multimedia, this add-on provides a convenient solution.