Vertical tabs as a tree in Chrome's side panel. Tabs you open from a page nest under it, and you can drag them to reorganize.
Platforms
- Google Chrome
+2
Best alternatives are 
Sideberyand
3 alternativesSideberyand
Vertical tabs as a tree in Chrome's side panel. Tabs you open from a page nest under it, and you can drag them to reorganize.
Sideberyand