The problems these browsers are trying to solve aren't web browser problems, they're window manager problems. Your web browser shouldn't try to be a window manager.
- If you want to have two web pages side-by-side, you don't need a web browser that can handle split panes. Just have each web page in its own window and use your window manager to put them side-by-side. Tiling window managers will do this automatically.
- If you want to have several web pages open but not visible, so that you can switch between them (i.e., tabs), just use your window manager's tabs, stacks, or workspaces.
- If you have want to have 100 tabs open, you should be using bookmarks or history instead of tabs.
- If you want to have different workspaces, profiles, or so on, use your window manager's workspaces. You can even name workspaces according to projects or tasks, and assign windows to them automatically.
Any modern window manager will do, but ones with automatic tiling are the best. Sway, i3, Monad, Hyprland, Awesome, and Newm are a few.
- If you want to have two web pages side-by-side, you don't need a web browser that can handle split panes. Just have each web page in its own window and use your window manager to put them side-by-side. Tiling window managers will do this automatically.
- If you want to have several web pages open but not visible, so that you can switch between them (i.e., tabs), just use your window manager's tabs, stacks, or workspaces.
- If you have want to have 100 tabs open, you should be using bookmarks or history instead of tabs.
- If you want to have different workspaces, profiles, or so on, use your window manager's workspaces. You can even name workspaces according to projects or tasks, and assign windows to them automatically.
Any modern window manager will do, but ones with automatic tiling are the best. Sway, i3, Monad, Hyprland, Awesome, and Newm are a few.