TimeMaster is a Chrome add-on developed by Time-Master.ru. This free add-on allows users to work with the TimeMaster organizer without having to visit the organizer's webpage.

With this plugin, users can easily access TimeMaster features directly in their browser. They can quickly see if there are any overdue tasks with the red TimeMaster icon in the top right corner of the screen. By clicking on the TimeMaster plugin icon, users can view the total number of tasks, number of overdue tasks, and more. They can also create new tasks or contacts directly from the plugin window.

One of the convenient features of this add-on is the ability to create a task from selected text on any webpage. Users can simply highlight the text, right-click to bring up the browser's context menu, and select "Create Task" to instantly create a task from the selected text.

To start using the TimeMaster add-on, users need to first authorize their TimeMaster account by clicking on the plugin icon and entering their login (email) and password for their TimeMaster account.

Overall, TimeMaster is a useful add-on for Chrome users who want to easily manage their tasks and contacts without having to navigate to the TimeMaster webpage.