Browser extensions are programmes that extend the functionality of web browsers like Firefox, Internet Explorer, Chrome and Opera.
Some of them are also very, very popular indeed with the most popular enjoying quite a few million users each, as this list of the most popular Firefox extensions illustrates.
One breed of extension that seems to be particularly popular are those offering online privacy protection or greater security when browsing.
Adblock Plus claims over 300 million downloads, Ghostery, over 40 million and Web of Trust, over 132 million. Eight of the twenty most popular Firefox addons (at the time of writing) can be categorised as applications that claim to offer some form of enhanced web browsing security or privacy protection.
This is an excerpt of a post originally published on cilip.org.uk. Read the full post on cilip.org.uk