I just installed firefox quantum. Unfortunatelly, the add-on Session Manager is not supported on Quantum. I know there is other add-ons that can do the job. My problem is that I would like to recover the data from Session Manager. I have the file containing all the session. But their format is SESSION and I don't know how I could open them to get the urls saved inside. I tried to open one of them containing just a few urls with a text editor, and it is equivalent to more thant 30 pages of code in word.