Firefox has its own Tab Discard feature, if you dont have little RAM, dont use "Auto Tab Discard" or others.

But this is really useful, mainly when having bad internet speeds

One error for when there's no loaded-tab to switch to, allow app to open 'New Tab' and switch to it as default behavior. I believe adding this functionality would really make the extension nicer. Otherwise, the function is very nice to lower browser resources, I use it often!

Works somewhat still but has increasingly issues that break the browser.

Excellent. Frees up memory and CPU by unloading the page and its active assets, but keeps the tab in the list. Prevents Firefox from focusing the unloaded tabs well enough but sometimes Firefox does what it does.

I regularly have 50+ tabs open. Since Big Sur, being able to unload tabs makes the fans run quietly.

A great add-on made much better through its Tree Style Tab integration.

Está muy bien hecha y encima no te carga de vuelta la página si tenes problemitas y la estabas viendo. Lo único malo es que está muy al fondo del 'context menu'.

great solution while is still not implemented natively

Works great. But this addon appears to cause the wrong tab to be selected after closing tabs. I had to prefer the left tab instead of the right otherwise I need to switch manually to the correct tab all the time.