https://www.ideaflip.com https://www.ideaflip.com - it's nice and simple compared to e.g. Miro, and nicely recreates the offline collaboration feeling of workin

https://www.ideaflip.com https://www.ideaflip.com - it's nice and simple compared to e.g. Miro, and nicely recreates the offline collaboration feeling of working around a whiteboard