After looking at the front page I had no idea what this is - a website? A program? And then the "try now" website told me to pay money and I lost interest. Any

After looking at the front page I had no idea what this is - a website? A program? And then the "try now" website told me to pay money and I lost interest. Anyway, I think I'd rather use a shared tmux session with regular vi, than a "collaborative Linux shell" with a "collaborative vi", whatever that is. I also prefer to let my window manager handle displaying code here, and video conferencing there. Reinventing "notes" and "calendar" is also curious. Does codassium really solve an actual problem?