I've recently migrated from Safari to Firefox and was almost giving up because I couldn't see all my bookmarks on a new tab - which sounds silly but it's very, very convenient and once you are accustomed to it, it's hard to give it up. I've been searching for an add-on for a while now. Finally, found it! Not only it was what I was looking for, but the permissions only asks to read and modify bookmarks and not read everything we type in a page or unnecessary things. Thank you very much!

p.s Is it possible to see the favicons of each website instead of the first letter?