Choose an uptime tool by how much you want to watch and who answers the alert. Simple website checkers get a small team covered in minutes, server and blacklist monitors suit hosts and sysadmins, and observability platforms bring on-call and incidents together for bigger engineering teams. Start with the smallest scope that covers your real risks.
The worst way to find out your site is down is from a customer. Uptime monitoring exists to make sure you hear first, and the eight services below all do that core job, in no particular order. Where they differ is in how much else they watch, and how much setting up they ask of a small team that's already busy shipping.
Four scopes of uptime monitoring
Simple website checks
Updown.io keeps things deliberately minimal, which developers who only need to know whether a site responds will appreciate. NodePing covers websites and servers with plain uptime checks and makes a point of its SMS alerts.
Websites, APIs and scheduled jobs
UptimeRobot adds SSL, keyword and cron monitoring to basic uptime checks, with alerts through email, SMS, Slack and other channels. Uptime.com watches websites, APIs and cron jobs, so it suits teams whose risk sits as much in background jobs as on the homepage.
Servers and blacklists too
HetrixTools combines uptime with server metrics and blacklist monitoring, a useful mix for anyone running mail servers or hosting for clients. Site24x7 goes wider still, across websites, servers, networks, applications and cloud platforms, for IT teams that want one service for the lot.
Inside a bigger observability stack
Better Stack brings incident management, on-call, logs, metrics, traces and error tracking together, and now adds an AI layer on top. Pingdom is presented as simplified website monitoring within the wider SolarWinds observability family. Both make most sense when uptime checks are one part of a larger operations picture.
Pulsetic alternatives in one table
| Tool | Monitoring scope | Good for |
|---|---|---|
| Better Stack | Observability and incident management | Teams wanting on-call, logs and incidents together |
| HetrixTools | Uptime, server and blacklist checks | Hosts watching servers and blacklist status |
| NodePing | Website and server uptime | Plain uptime checks with SMS alerts |
| Pingdom | Website monitoring from SolarWinds | Website checks inside a SolarWinds setup |
| Site24x7 | Full-stack IT monitoring | Websites, servers, networks and cloud in one service |
| Updown.io | Simple website monitoring | Developers wanting a minimal checker |
| Uptime.com | Website, API and cron monitoring | Watching sites, APIs and cron jobs |
| UptimeRobot | Uptime monitoring service | Quick set-up with SSL and keyword checks |
The eight monitoring services, A to Z
Alphabetical and unranked. Each line reflects how the vendor describes its own service.
Better Stack
Best for: Engineering teams wanting incident management, on-call, logs, metrics, traces and error tracking together, with the vendor now adding an AI SRE layer.
HetrixTools
Best for: Hosting providers and sysadmins who want uptime, server metrics and blacklist checks in one account, with alerts sent to many channels per the vendor.
NodePing
Best for: Small teams after straightforward uptime monitoring for websites and servers, with the vendor highlighting unlimited SMS alerts.
Pingdom
Best for: Teams already using or weighing up SolarWinds, since the vendor presents this simplified website monitoring alongside its wider observability product.
Site24x7
Best for: IT teams monitoring websites, servers, networks, applications and cloud platforms together; the vendor says it offers free monitoring as well as wider services.
Updown.io
Best for: Developers who want a minimal, no-fuss website checker; the vendor's own description sticks to simple and good-looking.
Uptime.com
Best for: Teams watching websites, APIs and cron jobs, with email, SMS and Slack notifications included according to the vendor.
UptimeRobot
Best for: Anyone who wants to start fast, with SSL, keyword and cron monitoring plus alerts by email, SMS, Slack and more, as the vendor lists them.
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From sign-up to first alert: what to check
Pulsetic's own homepage leads with free uptime monitoring, status pages on your own domain, and alerts that are confirmed from a second region before they fire, with no card needed to start. That last point is the one people miss. A single failed check from one location can be a network blip rather than an outage, and a tool that wakes you up for every blip soon gets muted.
So the thing to test in any replacement is how fast a small team gets from sign-up to a working setup, and who maintains it afterwards. Time how long it takes to add your main site, your API and one scheduled job, route alerts to the right person and publish a status page. Then ask what happens in six months, when someone adds a new service and nobody remembers to add a monitor for it. Tools in this category split by who they're built for and how much you set up yourself, so run the same real task through each before you decide.
Advice for small engineering teams
Don't monitor everything on day one. You'll drown in alerts, people will start ignoring them, and the one that matters will get lost. It's far better to have a handful of checks everyone trusts than dozens that nobody reads, and you can always add more once the basics are settled.
Start small and cover the things customers notice: your homepage, your login, your checkout or signup, and any API your product depends on. Add checks for SSL expiry and scheduled jobs next, because those fail quietly and catch teams out. Only move to a full observability platform when you're already drowning in separate tools for logs, errors and on-call.
Make sure alerts are confirmed from more than one location before anyone gets woken up, and keep a public status page so customers can see you know about a problem. For more options, see my guide to status page tools and my list of free uptime monitoring services.
Alert routing checklist
- Send critical alerts to a phone, not just an inbox, and name who's on call each week.
- Use a team chat channel for warnings that need attention but not a wake-up call.
- Set a short delay or second-location check so one failed request doesn't trigger a page.
- Add a monitor every time you launch a new service, as part of the launch checklist.
- Review muted and paused monitors once a month, and switch off the ones nobody needs.
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Frequently asked questions
What does an uptime monitoring tool do?
It checks your website, API or server at regular intervals from one or more locations and alerts you when it stops responding or returns an error.
How often should uptime checks run?
Every minute or so is common for key pages and APIs. Less critical pages can be checked less often. Faster checks spot problems sooner but can mean more noisy alerts.
Why confirm an outage from a second location?
A single failed check can be a network glitch near the monitoring server. Confirming from another region cuts false alarms, so people trust the alerts they get.
Do I need a status page?
It helps. A public status page tells customers you know about a problem, which cuts support messages during an outage and builds trust afterwards.
Should I monitor cron jobs and scheduled tasks?
Yes, if anything important runs on a schedule, such as backups or invoices. Heartbeat or cron monitors alert you when a job doesn't check in on time.
Is free uptime monitoring good enough?
For a small site, often yes. Check the check frequency, alert channels and number of monitors on the free plan before you rely on it for a business-critical service.
