Adblock Plus (Firefox)
Blocks annoying video ads on YouTube, Facebook ads, banners and much more. Adblock Plus blocks all annoying ads, and supports websites by not blocking unobtrusive ads by default (configurable).
Adblock Plus allows you to regain control of the internet and view the web the way you want to. The add-on is supported by over forty filter subscriptions in dozens of languages which automatically configure it for purposes ranging from removing online advertising to blocking all known malware domains. Adblock Plus also allows you to customize your filters with the assistance of a variety of useful features, including a context option for images, a block tab for Flash and Java objects, and a list of blockable items to remove scripts and stylesheets.
uBlock Origin is an efficient and powerful ad blocker with low memory and CPU usage, it is fully compatible with filter lists of Adblock Plus.
The easy way to download and convert Web videos from hundreds of sites.
I don't care about cookies for Firefox removes annoying cookie warnings from almost all websites and saves you thousands of unnecessary clicks.
LastPass, an award-winning password manager, saves your passwords and gives you secure access from every computer and mobile device.
The best security you can get in a web browser! Allow active content to run only from sites you trust, and protect yourself against XSS and Clickjacking attacks.
Use the Evernote extension to save things you see on the web into your Evernote account.
I don't care about cookies for Chrome removes annoying cookie warnings from almost all websites and saves you thousands of unnecessary clicks.