I can't find any extension that does the same. The only thing I don't like is that instead of saving the page currently in the tab, it sends another request to save the html from the server. This nullifies any change that extensions are doing to the page. Otherwise, this is the only way to do what this extension does, so I'm grateful it exists.

Please, I really need the ability to save tabs to any folder you want! Now is very uncomfortable.
Can someone give me a similar add-on?

Sorry for the stupid question and I will modify my review once answered but once the tabs are saved to one file, how do we reopen them in firefox??