HetrixTools for hosting and deliverability
If you run servers or send email, blacklist monitoring and agent-based server metrics are genuinely useful and NorthDuty has neither. Its free tier is also unusually generous for plain uptime.
HetrixTools Alternatives: NorthDuty vs HetrixTools
HetrixTools is known for affordable uptime monitoring and blacklist monitoring. If you are comparing alternatives, the question is whether you also need rendered page-health checks and user journeys alongside availability.
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More than uptime and blacklist checks — rendered page health and journeys.
NorthDuty vs HetrixTools
Both cover uptime affordably; the difference is depth into rendered page health and journeys.
| Criteria | NorthDuty | HetrixTools |
|---|---|---|
| Core focus | Rendered website health and journeys with uptime, SSL, and DNS | Uptime monitoring and blacklist monitoring |
| Catches 'up but broken' | Yes — blank pages, JS errors, broken resources, and failed journeys | Focused on availability and blacklist reputation |
| User journeys | Plain-text or AI-suggested multi-step journeys | Not a focus |
| Best for | Teams needing to know pages and flows actually work | Teams wanting affordable uptime and blacklist checks |
HetrixTools vs NorthDuty at a glance
Checked on both vendors' public pages on 18 September 2026. HetrixTools does not expose its paid pricing page to automated requests, so only the published free-tier limits are quoted here — check the current figures yourself before buying.
| HetrixTools | NorthDuty | |
|---|---|---|
| Free tier | 15 uptime monitors plus 32 blacklist monitors, advertised as free forever | 1 journey daily, 1 site, health checks every 5 minutes |
| Core strength | Cheap uptime monitoring from up to 12 locations, and blacklist reputation monitoring | Rendered page health and multi-step journeys on the flows that earn money |
| Blacklist and IP reputation | Yes — all major blacklists, including Microsoft SNDS | Not offered |
| Server metrics | Yes, via an agent on Linux, Windows, macOS and shared hosting | Not offered — monitoring is external only |
| Multi-step flows (checkout, login) | Not documented as a check type | Yes — real-browser journeys with the failing step named |
| SSL, domain expiry and nameserver changes | Yes | SSL and DNS monitoring included |
| Paid pricing | Published on its pricing page (not machine-readable at the time of writing) | Free, $29 Starter, $79 Pro — listed publicly |
When each one fits
These two overlap only on uptime; either side of that they cover different ground.
NorthDuty for the customer's experience
If your worry is a blank page after a deploy or a checkout that stops completing, availability and reputation checks cannot see it — that needs a rendered check and a journey.
Agencies often want both
Server reputation on the hosting side, journeys on the client-facing side. They are cheap enough together that choosing is usually unnecessary.
Check what an alert contains
For a broken flow the useful alert names the step and shows the page. For a blacklist hit the useful alert names the list. Different jobs, different evidence.
Where uptime-and-blacklist monitoring focuses
HetrixTools does a useful job of uptime monitoring and blacklist monitoring at a low price, which is valuable for teams that care about availability and about whether their domain or IP has landed on a blacklist.
The gap appears when the concern is the rendered customer experience: a page that loads blank after a deploy, a button that disappears, or a checkout that stops completing. Uptime and blacklist checks confirm reachability and reputation, not whether the page actually works for a visitor.
Why rendered page health and journeys matter
Many costly failures happen while a site is reachable and its reputation is clean: a blank page, a JavaScript error that disables a button, a layout shift that hides a call-to-action, or a broken checkout flow.
NorthDuty renders each page on every health check to catch those failures, tracks SSL and DNS, and runs plain-text or AI-suggested user journeys — with alerts to email, Slack, and more, and a free plan to start.
How NorthDuty adds depth past uptime and blacklist checks
NorthDuty focuses on the rendered visitor experience.
1
Keep uptime and SSL
Every check confirms the site responds and that certificates and DNS are healthy.
2
Render the page
Each check loads the page in a real browser to catch blank pages and script errors.
3
Re-check after deploys
Deploy detection re-runs health checks and journeys after each release, so a broken page is caught quickly.
4
Run key journeys
Confirm signup, login, and checkout complete with plain-text or AI-suggested journeys.
Explore Related NorthDuty Pages
Review the product pages and supporting content that explain the monitoring depth behind the comparison.
Feature
Uptime Monitoring
Monitor uptime every 5 minutes by default with HTTP, SSL, DNS, blank-page detection, broken resources, JavaScript errors, and API call tracking.
Explore Uptime MonitoringFeature
Website Monitoring
Learn how NorthDuty combines editable user journeys and website health checks in one website monitoring project.
Explore Website MonitoringArticle
Why Websites Break Without Going Offline
Learn why websites can break without going fully offline and how website health monitoring helps detect silent failures.
Read Why Websites Break Without Going OfflineArticle
Best Uptime Monitoring Tools
How to choose an uptime monitoring tool: what to look for beyond a simple ping, the main categories of tool, and where deeper page health monitoring fits.
Read Best Uptime Monitoring ToolsPricing
Pricing
NorthDuty plans are sized by how many checkout, signup and login journeys you monitor: Free, $29 Starter, $79 Pro, $199 Business. 7-day trial, no card.
Compare pricing plansFrequently Asked Questions
Answers to common buying questions for teams comparing monitoring options.
What does HetrixTools include for free?
Its site advertises 15 uptime monitors plus 32 blacklist monitors free forever, with uptime checks from up to 12 global locations, SSL and domain-expiry tracking and nameserver change detection. Checked 18 September 2026 — confirm current limits on its own pricing page.
Does HetrixTools monitor checkout or login flows?
Multi-step browser checks are not documented among its monitor types; it focuses on uptime, blacklist reputation and agent-based server metrics. Verifying a purchase or sign-in flow is the usual reason people add a second tool.
Is NorthDuty a replacement for blacklist monitoring?
No. NorthDuty does not check IP or domain blacklists and does not collect server metrics. If those matter to you, keep HetrixTools for that part and use NorthDuty for the rendered pages and customer journeys.
What is a good HetrixTools alternative?
If you want rendered page-health checks and user journeys in addition to uptime, NorthDuty is a strong alternative that still covers uptime, SSL, and DNS — and starts free.
Does NorthDuty do blacklist monitoring?
NorthDuty focuses on rendered website health and user journeys rather than blacklist monitoring. Its strength is catching customer-facing failures that availability and reputation checks miss.
What does NorthDuty add over uptime-only tools?
Rendered page-health checks that catch blank pages and JavaScript errors, plus scheduled user journeys for flows like checkout and login, with a screenshot of any failed step.
Start monitoring your website with NorthDuty today.
Choose NorthDuty when you want more than uptime and blacklist checks — rendered page health and user journeys that catch customer-facing breakage.
7 days with Pro features and limits, no credit card — then keep one daily journey on the free plan.