Pale Moon and Waterfox. Both are virtually identical to Firefox.
I am looking at Pale Moon now and like that it says it is compatible with the add-ons that made Firefox a great browser (to me). Privacy was my main concern and Firefox add-ons made it my go to choice. Thanks for the suggestion. Have you had any problems with add-on using Pale Moon? Ex. Flashblock, Adblock edge/plus, Ghostery, etc...