What browser to use to manage tabs of all my manga?

I saw a post someone made of their browser having the feature to pin tabs, and the bottom bar had names of different tab groups so I assume theres a feature switch between tab groups/workspaces.

I know Google Chrome has tab groups but in that picture, the UI was different (bottom bar for tab groups)

I can't find that post again but I really want to know what browser they used... I already searched google for mobile browsers that have both features and nothing I tried had them.

Maybe I'm tweaking or it was a desktop browser? I swear I remember the picture was a vertical screen though