I've only used this extension for 5 minutes and I already love it! Surprisingly, it still works, despite that the last update was 4 years ago. I installed it only because of this option: "Allows for the forced discarding of specified hostnames". And it works better than expected! It doesn't allow opening tabs leading to a specific site. Not just "open and then autoclose the tab", as I thought it would. It plain and simple doesn't allow the tab to be created! <3

Thanks you for creating this awesome extension!

lowers firefox memory use

Poderia ter uma interface mais amigável, mas fora a isso funciona bem

Love how it puts a sleep sign on inactive tabs, but when opening a sleeping tab I don't have to click again on the page to open it, the page opens automatically. Well done!

Essential addon

Excelente extensión. Ha liberado el procesador y la ram rápidamente, y tiene muchas opciones para poder configurarla a tu gusto. La recomiendo totalmente. Es brillante. Gracias a su desarrollador, y al equipo que la hace posible.

It stopped working a long time ago and extension is now abandoned.

I'm very impressed! This is the most effective way to free up RAM that I've ever seen.

This extension has been a lifesaver—it helped me fix all the memory leak issues I was having on YouTube.

Works as expected. Very useful for batter life and old devices with low RAM and weak CPU.
It is must given today's badly optimized and scripts entangled mess we call a web. Not so much from security POV but at least idle means idle again.