When comparing Tree Style Tab vs Shout, the Slant community recommends Tree Style Tab for most people. In the question“What are the best Firefox add-ons?” Tree Style Tab is ranked 5th while Shout is ranked 31st. The most important reason people chose Tree Style Tab is:
Tree Style allows you to have at least 10 tabs open.
Ranked in these QuestionsQuestion Ranking
Pros
Pro Organizes multiple tabs
Tree Style allows you to have at least 10 tabs open.
Pro Visibility
It lets you see everything you want to see and auto-hides those you don't.
Pro Fairly stable
It does not seem slow, you'd never have problems that will make you disable the program.
Pro High customization
Pro Theme support
Pro Always connected
Unlike most other web IRC clients, Shout will stay connected even when you close the browser. It will allow you to see conversations that happened while you were away.
Cons
Con No per-group customization
No way to colorize or otherwise highlight a group of tabs. Can reorder, but not the same.
Con Lacks searchable history
Con No native apps
It's only available as a webapp.
Con Doesn't manage presence
Users have to manually set away messages or away nicks to notify other users that they are not currently available.
Con Pressing escape will disconnect you
Con Can't send files
You can only share links to files, no way to share files directly between users.
Con This service isn't available.
in the browsers Chrome and Firefox