Plugins Addons Extensions - Plugins Addons Extensions is a platform that provides a one-stop-shop for all the latest Chrome extensions that can help you to run your business.
Mozilla Add-ons - Download Firefox extensions and themes. They’re like apps for your browser. They can block annoying ads, protect passwords, change browser appearance, and more.
Chrome Web Store - Chrome Web Store is an officially recognized application store being developed and managed by the Google.
ChromeExtensions.org - ChromeExtensions.
Opera Add-ons - Get extensions and themes for the http://alternativeto.net/software/opera browser.
Chrome Extensions Archive - Archive all the chrome extensions