Vertical Tabs is described as 'This Firefox add-on arranges tabs in a vertical rather than horizontal fashion. It is heavily inspired by and borrows ideas from the excellent Tree Style Tab add-on' and is an app in the Web Browsers category. There are eight alternatives to Vertical Tabs for a variety of platforms, including Mac, Windows, Linux, Google Chrome and Firefox. The best alternative is Tree Style Tab, which is both free and Open Source. Other great apps like Vertical Tabs are Tabs Outliner (Freemium), Sidewise Tree Style Tabs (Free), Kurator (Freemium) and TabsFolders (Freemium).
A dockable sidebar for Chrome featuring vertical Tree Style Tabs, Tab Hibernation, and much more. * Tree Style Tabs: organize your tabs in a tree view. Supports ctrl/shift multiselect, drag & drop, instant search, right-click context menu, and more.
Kurator, lets you curate links into special folders, that you can pin to your browser tabs. The program scrapes information off the page and lets you add and modify description, author, publisher and content tags. Instant access to your info!.
Keep it simple! Vertical Tabs Popup is a very simple extension that lets you see the tabs in a vertical manner in a popup window. The window can preferably be place to the side of the main google chrome window.