This is exactly what I was missing to manage all my AppSumo deals. Finally I have a very nice overview of all websites, tools, etc., which I can sort very nicely. Everything is very clear and intuitive and looks really nice. So I have a super overview of all the important tools and get there quickly with one click. And if I want, I can even share the bookmarks with others.

One wish I would have: If there was the possibility to display the collections side by side or to arrange them, e.g. in two or three columns, that would also be a really great thing. Otherwise a really great bookmark manager!