Weje - Organize your ideas & projects into white boards without limits
Figma - Team-based interface design, Figma lets you collaborate on designs in real time.
Nototo - Notetaking for visual learners
FigJam - An online whiteboard from Figma designed for teams
Invision - Prototyping and collaboration for design teams
Mural - MURAL is a visual collaboration workspace for modern teams.