Security & Privacy
RememberPass No Restart
RememberPass is a Firefox/Firefox Mobile Addon to force browser to remember password even website disable it by default. It's done by set autocomplete to "on" where it's off.
Here is: Test Page
Delete Cookies on Exit No Restart
Deletes all cookies when Firefox Mobile is closed, preventing sites and web trackers from persisting data across browsing sessions and improving user privacy. This add-on is NOT for Firefox Desktop, which have this feature built-in.
LastPass, an award-winning password manager, saves your passwords and gives you secure access from every computer and mobile device.
The best security you can get in a web browser!
Allow active content to run only from sites you trust, and protect yourself against XSS and Clickjacking attacks.
FB Phishing Protector No Restart
Protects you from Phishing or Scams (through XSS injection attacks) while you're on Facebook™ - Version 4.2 introduces a Tracking Protection feature as well.