Tab-Sidebar is a free Chrome add-on developed by heithe that adds a convenient browser button. Upon clicking the button, a new window opens, providing a sidebar-like interface. This window allows users to order, arrange, and highlight tabs and windows, among other features.

With Tab-Sidebar, users can easily manage their tabs and windows by dragging and dropping them within and between windows. The add-on also allows for the creation and removal of tabs, separators, and windows, as well as the ability to make tabs active and rearrange them.

One of the main features of Tab-Sidebar is the ability to mark tabs as important, making them easier to find among the clutter of other tabs. Additionally, this add-on is particularly useful for users who have a large number of tabs open and face difficulties reading tab titles, especially when using a monitor in portrait mode.

To provide feedback, report bugs, or make feature requests, users can contact the developer via email. If you find Tab-Sidebar helpful, please consider rating it and sharing it with others. In case of any issues, it is recommended to contact the developer directly for assistance before leaving a negative review.