The best alternatives to Rocketboard are A Web Whiteboard, Whiteborb, and Idea Paint. If these 3 options don't work for you, we've listed a few more alternatives below.
What do you think of Rocketboard?
Sigma - See the Next Generation of Analytics— AI, Data Apps, Python - Attend the launch!
Whiteborb is a shared online drawing surface. It's free to use and open source. It also doesn't require signup and works well on mobile devices. Give it a try! 🖌️