Time Tasker is a Chrome extension developed by Plus 5 Designs. It falls under the category of Browsers and is specifically categorized as an Add-ons & Tools. This free extension allows users to easily set custom timeframes for their Google Tasks on Google Calendar.

With Time Tasker, users can extend the duration of their tasks as desired. This feature enables them to schedule their tasks with accurate timeslots. To customize the duration of a task, users simply need to add the desired duration in hours to the end of the task title, enclosed in parentheses. For example, adding "(3h)" to a task title will automatically expand the task to fill 3 hours when dragged into the Google Calendar.

Overall, Time Tasker is a convenient tool for users who want more flexibility in managing their Google Tasks on Google Calendar. It simplifies the process of customizing task durations and helps users better organize their schedules.