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Oh Dear vs Checkly: catalog facts
Oh Dear	Checkly
Paid Paid plans with a 10-day free trial that needs no payment details.	Freemium Free to start, with paid plans for larger use.
Web	Web, Command line
Crawls whole sites for broken links, not just the homepage Uptime, SSL, DNS and cron checks in one tool	Monitors defined as code and kept in version control Uses standard Playwright for browser checks
No permanent free plan Hosted only	Requires writing code, so less suited to non-developers Checks run on Checkly's hosted infrastructure
Hosted service	Downloadable app, 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.