All of the scripts on this site are using the following software Mozilla FireFox iMacro GreaseMonkey MultiFox You will need to download and install all 3 of these. Going that route allows Multifox to function again. I agree that add-ons are the responsibility of the developers, but sometimes asking firefox experts is the key. Multifox changes all of that, allowing you to set different accounts to be managed by Multifox per tab, where the accounts don't interfere with each other. Multifox allows you to assign an identity profile to each tab and isolates them from the rest. Each identity profile starts off as a number, but can be renamed to anything you want. Next, download the Multifox browser add-on for Firefox. Disclaimer: DO THIS AT YOUR OWN RISK. If you do it, I would suggest uninstalling it as soon as you finish the game as it's an unlicensed add-on.
2014 is in full swing, and so is our community board, which has selected the featured add-ons for February. If you have an add-on to nominate, please send it to amo-featured@mozilla.org for the board’s consideration. Feel free to submit your own add-on!
Pick of the Month: Multifox
Multifox is an extension that allows Firefox to connect to websites using different user names, simultaneously! If you have multiple Gmail, Twitter, Facebook, or Yahoo accounts, you can open them all at the same time. Each Firefox window accesses an account without interfering each other.
Awesome! I can log multiple emails, gaming accounts, forums, proxies, and so much more!”
Also Featured:
Disconnect
Make the web faster, more private, and more secure. Disconnect lets you visualize and block the otherwise invisible websites that track your search and browsing history. Get it now »
SaveAS
Save as anything with a click of a button. It is handy for web image collection addicts. Get it now »
Mail Redirect (for Thunderbird)
Our first featured add-on for Thunderbird!Allows you to redirect (a.k.a. “bounce”) mail messages to other recipients. Get it now »
Multifox is another Firefox extension for logging in to multiple accounts on the same site which I like because it doesn't messes with your cookies and I was never logged out from both accounts like it sometimes happens with CookiePie.