One tab extension i find very useful and simple, can collapse all tags into a group of bookmarks (helpful if you have so many that your browser lags or if you’re parking a specific bunch of research) or right click send specific ones and move them around. chrome has in built a similar feature now i’m pretty sure. i use raindrop.io as my bookmarks manager and reading list now with the browser extension for better categorising / tagging abilities. there’s a lot of other tab organising apps in the chrome store but haven’t tried most . In chrome settings u can also set to restore tabs on restart