The go-to extension for all who want an organized link collection on their new tab page without compromising their privacy. No redirecting your links, no ads, no trackers, just the launchpad you want, and for free. (It's also possible to support the developer via Patreon which is entirely voluntary. There is only an understated mentioning of this on the options page - no nagging in any way.)
NelliTab is fast and easy to work with. After setting up some basics all you need to do is get your bookmarks in order and you're good to go. Any changes you make to your bookmarks will immediately be reflected in your new tab pages. For me this is the first time I even use bookmarks - I had cultivated a local HTML startpage before - , and I quite like it!
This concept also mixes well with Firefox's new "Pocket" functionality. I have started using bookmarks for more permanent links, like news portals I visit regularly, while I save specific articles that I want to read later or archive for specific purposes to Pocket.
I was in brief email contact with the developer regarding a small bug (?) I had encountered and which was fixed in less than a day while maintaining polite, helpful and clear communication. That kind of responsiveness went above and beyond even my highest expectations. In turn I am happy to support the project with this review. Go NelliTab!