Самое удобное приложение из подобных (перепробовал с десяток аналогичных).
Здесь самая удобная и быстрая функция добавления страниц через иконку.

Но есть и минусы - иногда заметно тормозит, бывает что открывается пустая страница без галереи закладок.
Ещё, для меня большой недостаток что отсутствует возможность создавать подгруппы или папки в группах.
И ещё микроминус - если переименовать первую группу, то в контекстном меню она всё равно отображается как "Домой".

A proposition for add-on developer: Possibility to change the name of the card from "New card" to any name...

This has always been one of my favorite add-ons for Mozilla. If you're conscious of resource consumption and you need clearly delineated bookmark folders to organize your current research, intended projects, review materials, and so on, this is the only choice. If you don't mind your browser using as much memory as a 3d animator, the other one is slightly prettier by default.

Only 4, because custom CSS is not working on Firefox at all. Will there be any fixes?

希望增加批量选择，批量移动、批量删除功能。
增加刷新全部缩略图的功能。

This add-on was great for years, but in the last month it's suddenly started dropping my settings. I've tried reinstalling the addon and firefox and it just keeps happening.

How many times do I have to set everything up just to see it gone after restarting Firefox? Again, again and again. Works fine on Chrome, works like a nightmare on Firefox.

Годны дадатак , ужо даўно карыстаюся ім.

excellent app so easy to use and so handy

Exactly what I was looking for. Huge improvement over the default Firefox new tab.

Welcome page every time I open a new tab. Incredibly annoying. Welcome page opens with every new tab even after I continue through all the steps.