This post talks about utilizing faviconize tab extension with other greasemonkey scripts and addons to effectively reduce the cluttering due to too many tabs in your firefox. Free yourselves from the tabs panic.
Note : You need to install Faviconize Tab before you proceed with following the below mentioned addons.
If you have faviconize tabs installed and know about it, then skip to Faviconize All Tabs Section
Faviconize Tabs
Faviconize Tab is a wonderful addon which can be helpful for the users who browse heavily with firefox. This addon provides an option to reduce the size of the tab to the favicon of the site reducing clutter.
Before Faviconize

After Faviconize

Download page for Faviconize Tab : 
Faviconize All Tabs
I love using Faviconize Tabs and was thinking why is this not a default firefox feature and why in the world would I need to see ‘Site Name – Some Crap Text‘ (Like ‘Gmail – Inbox(3123) – xxx@gmail.com‘) in the tab title to know that its gmail’s tab, if I can simply understand that it is the tab for gmail from the favicon displayed in the tab.
So we can faviconize each tab and keep it simple. But the prob is, every time I have to faviconize any tab, I need to right click and select faviconize and I have to repeat for all the tabs… Is it so? Not really..
Go to Faviconize Preferences and in the Auto Faviconize, put ‘*’ as wildcard. Now every tab you open will be faviconized

Gmail FavIcon Alerts 3
But now you might ask me that the long title in the tab, Gmail – Inbox (No of Unread Messages), is very useful. Atleast you can get to know if you get a new mail, which is not possible with a faviconized tab. But there is an useful greasemonkey script which displays unread count in the tab and also the incoming chat indication in the tab…
Unread Messages

No Unread Message

Incoming Chat

Download Page : 
GReader FavIcon Alerts
So what about Google Reader? Fortunately we have something for that too…
Unread Message Count

Unread Message greater than 1K

Download Page : 
NOTE: You need GreaseMonkey installed to setup the above to scripts
Tree tabs
So you dont like the tabs on the top or do you think that you need to know from whether you opened this page (Parent page)? Then treetabs is there for you…Â Its self explanatory, check the screenshot.

Download page : 
Faviconize tabs +(Gmail +Greader) Favicon Alerts +Tree Tabs =Â Ultimate Clutter Reduction in Firefox…