What is the most useful browser extension?

[Viva Jan]

Ghostery.

 

[dickwh]

Chrome Remote Desktop

 

[Minse]

adblock

 

[RyanPCMR]

If using Firefox then I believe my list would already have been mentioned by someone, but here goes again : Noscript, Adblock plus, Tab mix plus, Video downloadhelper, Flashgot, Betterprivacy, MEGA, Site information tool, TinEye Reverse image search, Translate this!, Flagfox

 

[BlackMamba]

ABP

 

[redspark]

adblock
pocket
dashlane

 

[sand_man]

Speed Dial 2
IDM integration module
Linkclump
Adblock

 

[wavesailor]

uBlock

 

[BBSA]

uBlock Origin

 

[Geoff.D]

An adblocker -- whatever your favourite is
Any other extensions that are required to access/use info on your favourite websites.

The rest?

Forget them all ---- basically they are all not needed, and just a source of possible problems.

 

[mastermamo]

Safari WAS the best for speed, security and reliability but since the last Yosemite security update it's becoming a bit of a damp squib