Firefox

creating profiles:

firefox -profilemanager

launch ff on specific profile:

firefox -P <profilename> -no-remote

(the ”-no-remote” switch permit to launch several profile at the same time without locking)

(about:config)

disable compatibility check:

extensions.checkCompatibility false

https://addons.mozilla.org/en-US/firefox/addon/8426

https://addons.mozilla.org/en-US/firefox/addon/1843

https://addons.mozilla.org/en-US/firefox/addon/6826

https://addons.mozilla.org/en-US/firefox/addon/26

https://addons.mozilla.org/en-US/firefox/addon/60

https://addons.mozilla.org/en-US/firefox/addon/3780

https://addons.mozilla.org/en-US/firefox/addon/2558

https://addons.mozilla.org/en-US/firefox/addon/5369

https://addons.mozilla.org/en-US/firefox/addon/7613

http://users.skynet.be/mgueury/mozilla/download.html

https://addons.mozilla.org/fr/firefox/addon/201