My favourite Firefox Addons.
- CacheViewer: Fast and easy way of tanking a look at your browser cache
- DuckDuckGo Plus: Official extension for this privacy-aware search engine
- iMacros: Record, edit and playback macros to automate most actions you perform in webpages
- uBlock: Best Ad-Blocker extension. Also available for Firefox Mobile
- uMatrix: Proxy blocker to disable calls by subdomain and/or protocol
- URLParams: Shows and allows you to alter GET/POST url parameters in a sidebar.
For a few links on how to tune-up your Firefox browser, check my post on Tweaking Firefox.
To tweak privacy and avoid leaking too much usage data, check this document.
And if you, prefer FireBug to the default FFox inspector, you can disable it going to "about:config" and setting to false the key "devtools.inspector.enabled".