Concentab от Vilhelm

A simple extension that helps you focus by automatically managing tabs when visiting specific sites.
Features

- Blocks new tabs when viewing specified sites

- Automatically closes unrelated tabs when visiting focus sites

- Keeps desired sites open while closing all others


How to Use

- Click the extension icon to open settings

- Configure three lists:

- Block New Tabs On: Sites where new tabs should be blocked

- Target Sites: Sites that trigger tab cleanup

- Desired Sites: Sites to keep open (all others will close)