I don't know a way to check the exact number, but I'm 100% sure I'm over 2,000 tabs.
At work now so can't check but my PC at home has 64Gb RAM and up to half of that is used by Firefox.
I've noticed it gets unresponsive over 160 windows. I currently have 156 open (it tells you the number when you exit Firefox. Each of those windows has at least 20 tabs.
Firefox is good for an excessive number of tabs because it only loads the tabs when you activate them. Chrome is a memory hog.
At work now so can't check but my PC at home has 64Gb RAM and up to half of that is used by Firefox.
I've noticed it gets unresponsive over 160 windows. I currently have 156 open (it tells you the number when you exit Firefox. Each of those windows has at least 20 tabs.
Firefox is good for an excessive number of tabs because it only loads the tabs when you activate them. Chrome is a memory hog.