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Nullboard vs Kanboard: catalog facts
Nullboard	Kanboard
Free Free and open source under the BSD 2-Clause license.	Free Free and open source.
Web	Web, Self-hosted
Stores board data locally in the browser Imports and exports board data as JSON	Simple installation on your own server Work-in-progress limits per column
Minimalist feature set	Plain interface with a deliberately limited feature set You have to host and maintain it yourself
Web application	Self-hosted
Open source	Open source
License: BSD-2-Clause	License: MIT
Not stated if an account is needed	Not stated if an account is needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked October 8, 2026	Official website Full listing and sources Checked September 23, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.