Better Tab handling and has the ability to hold tabs in "groups" and a "panorama" view which allows you to view all tabs across groups.
The awesome bar has also improved significantly and has some smart features (like the option of tab switching instead of opening a new tab when you already have a URL open).
Better Add-ons management interface and some add-ons work without a restart of the browser.
Websockets disabled (for security)
I still prefer Chrome though.
PS. I've been using the FF 4 beta version for a 3-4 months now and probably dont remember the other significant changes.
I've been using FF4 beta since B3... does anyone actually use the panorama/tab grouping thing? I find its performance really poor and kinda frustrating, especially since I've been using add-ons that provide similar functionality for a while.
I use it incredibly heavily, in the same way that I use virtual desktops. I have a tab group for work, a tab group for play, a tab group for documentation. Makes it very easy to quickly jump in and out of large collections of tabs without having a completely unusable tab bar like Chrome does.
I do - kind of. Since I don't have Firefox set to reopen the last batch of tabs I had opened the last time I was using it, Panorama is kind of useless in my case, since I would mainly use it to keep tabs grouped by content, and it would be a chore to redo the grouping at each restart. Still, it comes in handy to keep reddit/hn on one group and work related stuff on another groups and quickly switch between the two by doing Ctrl - Shift - ~. A big optimization was to set browser.panorama.animate_zoom to false in about:config. That animation was killing the flow in my case.
The performance is great here on Arch Linux x64, haven't noticed any hiccups with it. I use the grouping feature to separate out tasks -- I have a work group, a research group, and a misc. group at the moment. It keeps my tab bar cleaner and more relevant and stops me from getting distracted as a flip through tabs when doing work or something. I have gmail pinned as an app tab, so that tab appears on all groups.
Since I tend to have 20-30 tabs open at a time, the tabs are usually too small to read - so I ended up using the Panorama to hold "ReadItLater" tabs. But now that the TreeStyleTab add-on is compatible with FF4, I no longer use it. Btw.. if you have a widescreen monitor, check out TreeStyle tab.
gives me:
Forbidden Installation
You don't have a permission to install XPI package directly from other websites. You have to access this extension from the home page of itself.
What you have appears to be the latest version (similar to what I have). Weird that I didn’t see that warning though. Which OS are you on? (I am on a mac)
It is invaluable when I'm doing research or development and I want to "swap out" something that I'm working on to focus on something else. Since that takes up the vast majority of my time -- yeah, I use it a lot.
Better Tab handling and has the ability to hold tabs in "groups" and a "panorama" view which allows you to view all tabs across groups.
The awesome bar has also improved significantly and has some smart features (like the option of tab switching instead of opening a new tab when you already have a URL open).
Better Add-ons management interface and some add-ons work without a restart of the browser.
Websockets disabled (for security)
I still prefer Chrome though.
PS. I've been using the FF 4 beta version for a 3-4 months now and probably dont remember the other significant changes.