When comparing Iridium vs Tree Style Tab, 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 Iridium is ranked 12th. 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 The developer particlecore is a respected github open source programmer and he presents all the functionality for free
Keeps up with updating bugs regularly. Always comments on 'issues' on git.
Pro Lightweight youtube.com enhancer and user experience editor
It does not overwhelm you with too many options, so you do not have difficulty choosing or having to try loads of different setups to get it just right. However the most important features are there.
Pro The extensions from the chrome store is also available on firefox & waterfox
If using a script manager it is usable across a whole range of browsers. There is a free script available to be used in browser script managers like ''Tampermonkey" which includes all functions of the addon through the script injections.
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
Cons
Con Iridium is currently on hold
The current build includes a bug which seems to break youtube functionality. However after a bit of searching, a solution can be found. Posted here to help others who might be debugging all their extensions for youtube not loading videos.
The solution for many seems to be to keep the autoplay function within Iridium settings ON.
Now your videos will most likely load and play again like they should.
Con No per-group customization
No way to colorize or otherwise highlight a group of tabs. Can reorder, but not the same.