The browser Vivaldi https://t.co/W1cVtRwF4V , I think it's the best one for me. I created several workspaces, separated sessions, so I can switch the workspace for different purpose, work, home, anonymous, project. I also like the features like sidebar panels, custom bookmark bar https://t.co/zAQy0bMeTC
After trying many self-hosted chat server solutions(e.g. Matrix,Rocket chat, mattermost) and some p2p chat apps,, I choose Mattermost, it's the only solution that worked at a local network, though it's not friendly to encrypted messages, my need is for LAN chat, so it's not bad.