Whiteboard
4 products ranked by how much of their useful core an AI coding agent can realistically reproduce.
Excalidraw+
Excalidraw+'s solo core is compact: build a browser-based collaborative whiteboard editor with drag, resize, connect, keyboard shortcuts, autosave, and SVG or PNG export. A competent builder can reach a useful personal version, while the paid product mainly wins on interaction polish, collaboration.
Creately
The visible diagramming + whiteboard loop is buildable, but a credible replacement needs more than the first screen. Creately earns its keep through interaction polish, collaboration, so expect a substantial build and a narrower personal scope.
Lucidspark
The visible whiteboarding loop is buildable, but a credible replacement needs more than the first screen. Lucidspark earns its keep through interaction polish, collaboration, so expect a substantial build and a narrower personal scope.
Miro
A simple multiplayer whiteboard is doable; Miro's value is scale, templates, integrations, facilitation, permissions, and reliability with many users.