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Oh Dear vs HetrixTools: catalog facts
Oh Dear	HetrixTools
Paid Paid plans with a 10-day free trial that needs no payment details.	Freemium Free tier with 15 uptime and 32 blacklist monitors; paid plans add more.
Web	Web
Crawls whole sites for broken links, not just the homepage Uptime, SSL, DNS and cron checks in one tool	Generous free tier for uptime and blacklist monitoring Checks from up to 12 locations
No permanent free plan Hosted only	Hosted only, with no self-hosted option Requires an account
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.