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HetrixTools vs TrackSSL: catalog facts
HetrixTools	TrackSSL
Freemium Free tier with 15 uptime and 32 blacklist monitors; paid plans add more.	Freemium Free sign-up tier with paid plans for more monitoring.
Web	Web
Generous free tier for uptime and blacklist monitoring Checks from up to 12 locations	Expiry alerts through email, Slack, SMS and Teams Notifies on certificate changes, useful for checking renewal automation
Hosted only, with no self-hosted option Requires an account	Focused on certificates rather than general uptime Hosted service only
Web application, Hosted service	Web application, Hosted service
Closed source	Closed source
License not stated	License not stated
Account needed	Account needed
Needs internet	Needs internet
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.