NoScript - NoScript for Firefox pre-emptively blocks malicious scripts and allows JavaScript, Java and other potentially dangerous content only from sites you trust. Download it now for free! - what is it?
PrivacySpy - Making online privacy (slightly) simpler
uMatrix - uMatrix: A point-and-click matrix-based firewall, with many privacy-enhancing tools.
Beef Taco - Sets permanent opt-out cookies to stop behavioral advertising for 100+ different advertising...
Ghostery - Privacy tool for transparency and control
Privacy Pal - Enter any website address to get a quick, simple overview of its Terms of Service.