Test the New Firefox Tab Responsive Feature With a Test Extension
Firefox: Snoozing emails is a fairly common practice these days, so it makes sense to add the same feature to your browser. Chrome has the Tab Snooze extension , and Firefox users can get it using the native Firefox Test Pilot extension.
The Test Pilot extension contains all sorts of experimental features, including mini video players, a fancy side tab bar, a screenshot tool, and now a set to snooze the sound of tabs. To take a test drive, simply visit the Firefox Test Pilot website and add it to Firefox. Once set up, you can snooze tabs for different periods of time, and then that tab will disappear temporarily until you need them.
Snooze Tabs | Firefox Test Pilot