Have you heard of or tried https://cryptpad.fr/index.html https://cryptpad.fr/index.html or https://ethercalc.net/ https://ethercalc.net/ ? I haven't used eith

Have you heard of or tried https://cryptpad.fr/index.html https://cryptpad.fr/index.html or https://ethercalc.net/ https://ethercalc.net/ ? I haven't used either before but cryptpad seems solid. Here's a demo sheet https://cryptpad.fr/sheet/#/2/sheet/edit/DirOb8rZr+6gfi5PCrS1c9SC/ https://cryptpad.fr/sheet/#/2/sheet/edit/DirOb8rZr+6gfi5PCrS...