The website is great for drawing surprisingly! It doesn’t have a fill-in bucket, but that’s due to it being infinite probably. If you’re looking for a collab site for doodling with your friends, that’s what you’re looking for! If you have any ideas on what could be added, you can always contact the devs, they usually respond and are super helpful :).
Update: I am happy to edit my review to inform everyone that now Whiteboardfox offers a bucket feature!
It is very good for doodling random ideas! make sure to have fun and keep being creative! It is down sometimes though ;-;
Krita - Krita is a professional FREE and open source painting program. It is made by artists that want to seaffordable art tools for everyone. Concept art. texture and matte painters, illustrations and comics.
Witeboard - A real-time whiteboard for your team. No signups required.
TwistedBrush Pro Studio - A powerful and unique natural media painting program.
Mural - MURAL is a visual collaboration workspace for modern teams.
Corel Painter - Corel Painter is media painting software.
Whiteboard Team - Draw, explain and collaborate visually in real-time.