Decide how much you want to watch. If you only need to know when a website or API goes down, a simple uptime checker is quickest to set up. If you also need server metrics, logs and on-call rotas, a broader observability tool fits. Either way, check which alert channels each one supports before you move a single monitor.
Three jobs often sit in one monitoring account: uptime checks, server metrics and blacklist status. HetrixTools bundles all three, with alerts sent to a long list of channels, which is why moving away takes a little more thought than it first seems.
The eight tools below are for developers and small engineering teams, in no particular order. They're grouped by how much each one watches, and every line reflects what the vendor says about its own product.
From a single ping to a full stack
Simple website and uptime checks
Updown.io, Pulsetic and UptimeRobot keep things light. You add a URL, choose how you want to be alerted and you're done. They suit freelancers, small agencies and side projects where the main question is whether the site is up. One of them also makes status pages on your own domain a central feature.
Uptime with more alerting depth
NodePing and Uptime.com go further on checks and notifications, covering services, APIs and scheduled jobs as well as websites. They fit small teams who look after a handful of client servers and need alerts to reach the right person reliably.
Whole-estate monitoring and observability
Better Stack, Site24x7 and Pingdom reach beyond uptime. One bundles incidents, on-call, logs and traces; one covers servers, networks and cloud platforms; one sits inside a larger observability suite. They make sense when uptime is only one of several things you watch.
The bundle problem: uptime, servers and blacklists
The thing to test in any replacement is how fast a small team gets from sign-up to a working set-up, and who maintains it afterwards. A tool that takes an afternoon to configure is fine if one person owns it. If monitoring is everybody's job and nobody's, simpler wins.
Server metrics are the next question. Most uptime tools check from the outside, so they'll tell you a site is down but not that a disk is filling up. If you relied on server agents for that, make sure your replacement has an agent too, or plan a second tool.
Then there's blacklist monitoring, which matters if you send email from your own servers. None of the eight tools here leads with it, so if it's part of your routine, ask each vendor directly whether they check mail server reputation, or keep a separate check running.
Uptime tools listed A to Z
Alphabetical and in no particular order.
Better Stack
Best for: Engineering teams wanting incident management, on-call, logs, metrics, traces and error tracking in one stack, which the vendor now frames around an AI SRE.
NodePing
Best for: Small teams watching websites, servers and services, with text-message alerts a headline feature on the vendor's page.
Pingdom
Best for: Website owners wanting simplified site monitoring, now offered within SolarWinds Observability SaaS, which the vendor pitches as unified visibility.
Pulsetic
Best for: Small sites needing uptime checks with status pages on their own domain and alerts confirmed from a second region, per the vendor.
Site24x7
Best for: IT teams monitoring websites, servers, networks, applications and cloud platforms from one place, with free monitoring named alongside its plans by the vendor.
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Updown.io
Best for: Developers who want plain, simple website monitoring without extras, which is how the vendor describes itself.
Uptime.com
Best for: Teams checking websites, APIs and cron jobs, with email, SMS and Slack notifications included, per the vendor.
UptimeRobot
Best for: Anyone wanting monitors running fast, with SSL, keyword and cron checks plus email, SMS and Slack alerts, as the vendor describes it.
A quick comparison grid
| Tool | Type | Good for |
|---|---|---|
| Better Stack | Observability and incident management | Incidents, on-call, logs and metrics in one stack |
| NodePing | Uptime monitoring | Website and server checks with text alerts |
| Pingdom | Website monitoring | Simple site monitoring within SolarWinds |
| Pulsetic | Uptime monitoring and status pages | Status pages on your own domain |
| Site24x7 | IT infrastructure monitoring | Websites, servers, networks and cloud in one place |
| Updown.io | Simple website monitoring | Plain website checks without extras |
| Uptime.com | Website and API monitoring | Websites, APIs and cron jobs with team alerts |
| UptimeRobot | Uptime monitoring | Quick set-up with SSL, keyword and cron checks |
Advice for small engineering teams
Match alerts to people before you match features. A monitor is useless if alerts land in a shared inbox nobody reads at the weekend. Decide who's on call, which channel wakes them up and what counts as urgent, then check each tool handles that cleanly. Monitoring your own site is also a good moment to look at what's hitting it; my guide on how to stop AI bots scraping your website covers the other side of uptime.
And don't confuse uptime monitoring with brand monitoring. One tells you your server is down; the other tells you what people are saying about you online, which I cover in my Brand24 review.
A like-for-like monitor check
- Export the list of monitors, check intervals and alert contacts from your current account.
- Pick two or three of your most important monitors, such as the main website, an API endpoint and a scheduled job.
- Set those up in each shortlisted tool with the same intervals and the same alert channels.
- Take a test page offline for a few minutes and note how quickly each tool alerts, and through which channel.
- Check whether false alarms appear over a few days, especially from a single location.
- Move the rest of your monitors only once the alerts reach the right people every time.
Do you make uptime or server monitoring software? Tool makers can ask to be considered for a featured place on this list.
Want your tool on this list? Featured spots and reviews here are paid partnerships. Here's how to partner with me.
Related: the saas tools page.
Frequently asked questions
What's the difference between uptime monitoring and server monitoring?
Uptime monitoring checks from the outside whether a site, API or service responds. Server monitoring uses an agent on the machine to track things like CPU, memory and disk, which can warn you before something breaks.
How often should uptime checks run?
Every few minutes is fine for most small business sites. Shorter intervals help for busy shops and APIs, where a few minutes of downtime is felt straight away.
Why do monitors check from several locations?
A single location can report an outage that's really a network problem near the checker. Confirming from a second location cuts false alarms.
Do I need a public status page?
If clients or users rely on your service, a status page saves a flood of emails during an outage. For a personal site, it's rarely needed.
What is blacklist monitoring?
It checks whether your mail server or domain appears on spam blocklists, which can stop your emails arriving. It matters most if you send email from your own servers.
