I love this extension! Works flawlessly with Waterfox Classic. Lot of options, very useful to preserve login cookies for instance, so you don't have to log again each time. You can see all that stuff that is stored in your browser when you surf and easily get rid of what you don't need, or edit cookies according to your needs, etc. Maybe an option to lock specific cookies could be added, if it's possible, so websites cannot make changes on them (date or data). Thanks anyway to the developer, keep up the good work!