Compare software

Nullboard vs Trello: catalog facts
Nullboard	Trello
Free Free and open source under the BSD 2-Clause license.	Freemium Free plan for up to 10 collaborators per workspace; paid plans remove limits.
Web	Web
Stores board data locally in the browser Imports and exports board data as JSON	Simple, visual Kanban boards Inbox captures items from email and Slack
Minimalist feature set	Free plan limited to 10 boards and 10 collaborators per workspace Hosted only, no self-hosting
Web application	Web application, Hosted service
Open source	Closed source
License: BSD-2-Clause	License not stated
Not stated if an account is needed	Account 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.