Fast.com - Quickly test your internet speed with this fast-loading speed test powered by Netflix.
Smart Tab Mute - Ensures that only one tab is playing sound at the same time
SpeedOf.Me - SpeedOf.Me is an HTML5 Internet speed test. No Flash or Java needed!
Mutify - Use a shortcut on any Mac device to mute your microphone
LibreSpeed - Self-hosted Speedtest for HTML5. Easy setup, examples, configurable, mobile friendly.
Mute Intercom - Mute annoying sounds from Intercom 🔕