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

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