BeeCanvas - Realtime & Interactive Whiteboard. Collect and organize everything in one place.
getLocus - An interactive workspace featuring a whiteboard & video chat
Miro - Scalable, secure, cross-device and enterprise-ready team collaboration tool for distributed teams. Join 2M+ users & 8000+ teams from around the world.
Lucidspark - The virtual whiteboard that connects teams so they can bring their best ideas to life
Sharepoint Online - SharePoint is a secure place to store, organize, share, and access information from almost any device.
Good Annotations - A online annotation tool that is perfect for providing feedback to your team.