Loops Feedback - Feedback on design ideas in minutes via 110m+ people
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.
Yafi - Feedback widget for your website
Addoncrop - Extends the functionality of your web browser
Basil Chat - Design feedback via chat
Chrome Extension Downloader - Chrome Extension Downloader is the name of a website dedicated for downloading and Chrome extensions.