Firefox: https://addons.mozilla.org/firefox/search/?q=adblock
https://addons.mozilla.org/en-us/firefox/addon/bluhell-firewall
https://www.ghostery.com/try-us/download-browser-extension

Internet Explorer: https://adblockplus.org/en/internet-explorer
https://www.ghostery.com/try-us/download-browser-extension

Chrome: https://chrome.google.com/webstore/search/adblock?hl=en-US&_category=extensions
https://www.ghostery.com/try-us/download-browser-extension

Safari: https://extensions.apple.com/?q=adblock
https://www.ghostery.com/try-us/download-browser-extension

Opera: https://addons.opera.com/en/search/?query=adblock
https://addons.opera.com/en/extensions/details/ublock/?display=en
https://www.ghostery.com/try-us/download-browser-extension

Android: http://bit.ly/1ptZmIF

iPhone/iPad: http://www.adblockforios.com
https://itunes.apple.com/app/adblock-browser-for-idevices/id537774578