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Hesk vs osTicket: catalog facts
Hesk	osTicket
Freemium Free to download and self-host, with paid licenses and flat-fee cloud plans.	Free Free to download and self-host; a separate paid hosted version is offered.
Web, Self-hosted	Web, Self-hosted
Simple to install on a standard PHP server Built-in knowledge base for self-help	Mature and widely used Self-hosted, keeping ticket data in house
Not open source Some options require paid licenses or the cloud plan	You install, update and secure the server yourself Website promotes a separate paid hosted product
Self-hosted, Hosted service	Self-hosted
Closed source	Open source
License not stated	License not stated
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 23, 2026

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