Tests

A set of tests to try an identify if a user is running a particular Firefox plugin, specifically those relating to blocking script execution, flash and adverts

No Script

Gives per-site and temporary/permanent configurability of Javascript on/off. Seems to work exactly the same as turning JS off wholesale.

https://addons.mozilla.org/en-US/firefox/addon/722

Enabled?

Flash Block

Disable flash elements by default, but allows whitelisting/one off loading.

https://addons.mozilla.org/en-US/firefox/addon/433

Enabled?  

AdBlock Plus

Blocks ads based on various regex and heuristic rules, allows users to mark elments as ads to be blocked. Very popular, has ~50,000,000 downloads.

Enabled? No This is a heuristic test, it's not possible to directly (as ABP tends to hide it's presence)