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TrackSSL vs Oh Dear: catalog facts
TrackSSL	Oh Dear
Freemium Free sign-up tier with paid plans for more monitoring.	Paid Paid plans with a 10-day free trial that needs no payment details.
Web	Web
Expiry alerts through email, Slack, SMS and Teams Notifies on certificate changes, useful for checking renewal automation	Crawls whole sites for broken links, not just the homepage Uptime, SSL, DNS and cron checks in one tool
Focused on certificates rather than general uptime Hosted service only	No permanent free plan Hosted only
Web application, Hosted service	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.