Directory / Uptime and certificates
FreemiumFree tier checked
HetrixTools
Uptime and blacklist monitoring with free monitors that stay free.
Verdict
HetrixTools says 15 uptime monitors are free forever, and 32 blacklist monitors are free forever. Checks are described as 1-minute. That is a clearer free plan than most uptime vendors on this list.
- Who it is for
- Someone who wants a few uptime checks and blacklist watches without a trial clock.
- Free tier
- 15 uptime monitors free forever, and 32 blacklist monitors free forever, from the homepage. Checked 14 Oct 2026.
- Pricing note
- Paid plans exist. Dollar amounts were not copied from a full pricing table.
- Categories
- Uptime and certificatesFree checkers
- Last verified
- 14 Oct 2026
- Ownership
- Independent of this directory.
What holds up
- Free forever is stated, with counts.
- Blacklist monitoring is included as its own free allowance.
What to watch
- Paid prices are not in this listing.
- Fifteen uptime monitors is small for an MSP.
Alternatives
Other tools in this directory that do related work. Same ordering rules. A different job is called out in the verdict, not hidden.