Firefox and Thunderbird - modify the look.
You can have the rows wrap to multiple rows when you have many sites over.
http://davidswebsite.com/Firefox_tabs/firefox_tabs.html
Thanks. I myself had said you can get multiple rows with Quantum but that "it takes one [1]of the hacks" which page provides links to the same the patcher or JS Loader by Izheil.
Thank God for such.