Ferdium is based on electron. But it actually uses it to render websites. It's slick and handy. When talking about profiles, I mean in Firefox, which will grand you all the protections you need. If you need to add addons or change settings, with the user.js config, you will need to type about:setthings or about:addons rathet then cluck on a few buttons, but if all you use it for is just a few sites working in a single window, it's fine.