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Nezha vs HetrixTools: catalog facts
Nezha	HetrixTools
Free Free and open source.	Freemium Free tier with 15 uptime and 32 blacklist monitors; paid plans add more.
Linux, Self-hosted	Web
Lightweight dashboard and agents SSL certificate expiry monitoring	Generous free tier for uptime and blacklist monitoring Checks from up to 12 locations
Needs a server to host the dashboard Much of the community documentation is in Chinese	Hosted only, with no self-hosted option Requires an account
Self-hosted	Web application, Hosted service
Open source	Closed source
License not stated	License not stated
No account needed	Account needed
Not stated if it works offline	Needs internet
Official website Full listing and sources Checked September 24, 2026	Official website Full listing and sources Checked September 23, 2026

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