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Zendesk vs OTOBO: catalog facts
Zendesk	OTOBO
Paid Paid subscription service with a free trial.	Free Open source with no licence fees.
Web	Web, Self-hosted
Tickets from many channels in one queue Covers both customer support and internal employee service	No licence costs ITSM processes based on ITIL practices
Proprietary hosted service with data stored by Zendesk Heavy focus on AI features that may not suit every team	You have to host and maintain the server yourself Website content is mainly in German
Hosted service	Self-hosted
Closed source	Open source
License not stated	License not stated
Account needed	Not stated if an account is needed
Needs internet	Not stated if it works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 24, 2026

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