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mindwendel vs Conceptboard: catalog facts
mindwendel	Conceptboard
Free Free and open source under the AGPL-3.0 licence.	Paid Paid service with a free trial.
Web, Self-hosted	Web
Participants join anonymously with no registration Live upvoting, labels, lanes and comments	GDPR-compliant hosting Tasks with assignees, deadlines and tags on the board
Interface translated only into German and English File attachments need S3-compatible storage	No permanent free plan mentioned Browser only
Self-hosted	Hosted service
Open source	Closed source
License: AGPL-3.0	License not stated
No account needed	Account needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 2, 2026

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