This is only for those who use the Firefox web browser. This is a list of add-ons for Firefox that I believe will enhance your web surfing experience and make it more secure.
1) Adblock Plus https://addons.mozilla.org/firefox/1865/
Do you wish certain advertisements and images did not show up? Well there is help. This is one of my favorite add-ons. ABP (Ad Block Plus) will block advertisements from know shady places from showing up. It will also allow you to manually choose to block certain images and advertisements. If an image and/or advertisement shows up that you don't like. Just right click on the image and then click on "adblock image" and you'll never see that image again. This add-on will also subscribe to an ad-watch website and update every so often to keep your adblock plus up to date so you don't have to worry about always blocking new advertisements.
2) Flashblock https://addons.mozilla.org/firefox/433/
This is also one of my favorites and is especially nice for people who still use dial-up connections. This will block all flash animation until you tell it to play. Thus you don't have to wait for flash animations to download.
3) NoScript https://addons.mozilla.org/firefox/722/
This disallows java to be run on your computer until you give it permission from trusted sites. Beware though that running this will block features on some websites and maybe a tad frustrating until you have your trusted website database up to date.
4) Colorful Tabs https://addons.mozilla.org/firefox/1368/
This is for those who have become to using browser tabs while surfing the web. This will give each tab you open a different color making it easier to keep track of them.
5) Tab Catalog https://addons.mozilla.org/firefox/1937/
This again is for those who love to use tabs while browsing the web. This will display thumbnail images of all the tabs you have open. Then just click on the one you want.
6) IE Tab https://addons.mozilla.org/firefox/1419/
Some websites require you to run IE to view and use them correctly. However, with this installed it will allow you to run an IE tab inside Firefox. This way you don't have to switch browsers. You'll be able to visit IE only websites with Firefox.
7) Split Browser https://addons.mozilla.org/firefox/4287/
This add-on allows you to split the browser screen so you can view 2 or more websites at once on the same screen without switching tabs.
Mouse Gestures https://addons.mozilla.org/firefox/39/
If you're tired of always having to use the keyboard or clicking on icons to browse the web this is for you. This makes it possible to back-up or go forward, open a new tab, etc.. etc.. with simple movements of the mouse. It's a bit awkward at first but once you're use to it you'll never go back.