pinup - Pinup.com is quick and easy to take sticky notes and share with your friends. It's Simple to use.
Miro - Scalable, secure, cross-device and enterprise-ready team collaboration tool for distributed teams. Join 2M+ users & 8000+ teams from around the world.
Sticky Notes - Sticky Notes is an integrated feature of adding notes in the Windows operating systems.
tldraw - A tiny little drawing app.
Lucidspark Online Sticky Notes - Lucidspark Online Sticky Notes provides teams with a full-screen canvas to create notes, discuss thoughts, share experiences, or initiate voting to reach a suitable decision.
Excalidraw - Excalidraw is a whiteboard tool that lets you easily sketch diagrams that have a hand-drawn feel to them.