Auto Tab Discard (suspend)

Empty New Tab Page

thakis@chromium.org

With this extension, new tabs display a blank page instead of the usual new tab page with thumbnails.

Tabs Outliner

The Next Generation Session Manager; A Really Working Too Many Open Tabs Solution; And Your Browsing Notebook.

Vertical Tabs

Vertical tab manager in side panel

The Marvellous Suspender

Make your computer run smoothly by suspending the tabs you aren't using

Tab Groups Extension

Automatically group tabs, save tabs/groups, and provide shortcuts for tabs/groups.

Tab Wrangler

tabwrangler

Automatically closes inactive tabs and makes it easy to get them back

Toby Mini

Same as Toby, but not on the new tab. Organize your browser tabs and access them quickly anywhere.