Compare software

HetrixToolsDNS Spy
Freemium

Free tier with 15 uptime and 32 blacklist monitors; paid plans add more.

 Freemium

Monitoring is paid with a 7-day free trial; some one-off tools are free.

Web Web
  • Generous free tier for uptime and blacklist monitoring
  • Checks from up to 12 locations
  • Record-level change alerts checked from multiple locations
  • Domain and SSL expiry tracking in one place
  • Hosted only, with no self-hosted option
  • Requires an account
  • Continuous monitoring requires a paid plan
  • Hosted service 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

Checked September 23, 2026

Checked October 2, 2026

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