Firefox: It's easy to accumulate multiple profiles on various services. If it's always annoyed you to have to perform browser-acrobatics to use your two Gmail accounts or other services, check out Multifox and never be hassled by multiple logins again.
Multifox adds a simple function to Firefox. When you want to log into a service with more than one user name simultaneously you right click on the bookmark for that service or open the File menu and select "Open in New Identity Profile".
Certainly a savvy Firefox user could jump in and say "But Firefox already supports multiple profiles!", and it does. Multifox is much easier than managing multiple profiles natively in Firefox because it does so without messing around in the Profile Manager and without having to manually create a new profile for each new additional service. If you need to, on the fly, test out five instances of a service Multifox will help you create five distinct profiles in five clicks.
Each profile is assigned a number — the screenshot above shows us logged into a secondary Gmail account &mdash ;and is opened in a new window. If Firefox crashes, all the extra profiles generated by Multifox will be restored when you restore the original instance of Firefox.
Multifox is free and works wherever Firefox does. Have your own tip or trick of managing multiple logins? Let's hear about it in the comments.