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