Short answer
Choose an uptime monitoring tool by matching it to what you need to detect and who needs to know: check types and intervals, how failures are confirmed, which alert channels and on-call features it supports, status pages, team seats, data retention and pricing model. Then decide between SaaS, which runs from outside your infrastructure with no maintenance, and self-hosted open-source tools such as Uptime Kuma, which give full control but must be run and maintained by you.
The right uptime monitoring tool is the one that detects the failures you care about quickly, alerts the right person reliably, and costs less than the downtime it prevents. Feature lists across vendors look similar, so this checklist focuses on the questions that actually separate tools.
1. Check types
List what you need to monitor, then confirm each is supported:
- HTTP(S) with status code and keyword assertions.
- Advanced HTTP: custom methods, headers, request bodies, JSON or regex assertions for APIs.
- TCP port, ping (ICMP) and DNS record checks.
- Heartbeat (cron) monitoring, and the range of intervals it supports. Some tools handle daily or weekly jobs; others are limited to shorter intervals.
- SSL certificate validation and expiry tracking; domain registration expiry.
- Multi-step API workflows, and whether you need full browser (synthetic) tests that run JavaScript.
2. Check interval
The interval determines how fast you hear about an outage. Check the minimum interval on the plan you would actually buy, not the top tier. Free plans commonly check every 5 minutes; paid plans commonly every 30 to 60 seconds. Also check whether the interval limit applies per monitor or account-wide.
3. Failure confirmation and accuracy
Ask how the tool decides a target is down. Good answers include re-checking before alerting, confirming from multiple locations, and treating the tool's own errors as "unknown" rather than your downtime. Ask how many probe locations exist and whether you can choose them. A tool that alerts on a single failed check will be noisy.
4. Alert channels and on-call
| Need | Look for |
|---|---|
| Team awareness | Slack, Microsoft Teams, Discord, Google Chat, email |
| Waking someone up | SMS, voice calls, push apps, PagerDuty or Opsgenie-style integrations |
| Custom automation | Signed webhooks with retries |
| Larger teams | Routing rules, on-call rotations, escalation policies, acknowledgement |
Check how SMS and voice are priced; some tools include a quota, others charge per message or require credit.
5. Status pages
If you want to communicate with customers, check how many status pages are included, whether custom domains and HTTPS are supported, whether private pages are available, whether visitors can subscribe to updates, and whether incident updates can be posted from the same place you manage incidents.
6. Seats, roles and projects
Count how many people need to log in, and whether some only need read-only access. Per-seat pricing can become the largest cost for growing teams. Look for roles, project-level separation (useful for agencies) and an audit log if you have compliance requirements.
7. Data retention and reporting
Retention determines whether you can answer "what was our uptime last quarter?" Check separately how long raw check results, incident history and aggregated uptime are kept, and whether you can export them as CSV or via an API. If you report against SLAs or SLOs, check for availability reports, maintenance exclusion and error budget tracking.
8. Pricing model
- Per monitor: predictable, but expensive if you monitor many small targets.
- Per seat: cheap for solo users, expensive for large teams.
- Tiered bundles: a fixed price for a quota of monitors, seats and pages.
- Usage-based extras: SMS, voice, API workflow requests or status subscribers billed separately.
Work out the total for your real setup a year from now, and check what happens on downgrade: whether data is deleted or monitors are just paused. Always verify current prices on each vendor's own site.
9. API, integrations and automation
If you manage infrastructure as code or many monitors, check for a documented REST API, scoped API tokens, a CLI, CSV import and export, and deployment markers from CI so incidents can be correlated with releases.
10. Security, privacy and data location
Ask where data is stored, whether secrets used in monitors are encrypted, whether two-factor authentication is supported, and what happens to your data on cancellation.
SaaS vs self-hosted
SaaS tools run from outside your infrastructure and need no maintenance; self-hosted tools give full control but you operate them.
| Factor | SaaS | Self-hosted (e.g. Uptime Kuma) |
|---|---|---|
| Setup | Minutes, nothing to install | Install and configure a server or container |
| Maintenance | Handled by the vendor | Updates, backups and security are your job |
| Independence | Runs outside your infrastructure | Must be hosted separately from what it monitors |
| Who monitors the monitor | The vendor | You |
| Cost | Subscription (free tiers common) | Software is free; you pay for hosting and time |
| Control and customization | Limited to vendor features | Full control, source code available |
| Private network targets | Usually public targets only | Can monitor internal services |
Uptime Kuma is a popular open-source, self-hosted monitoring tool with a wide range of check types and notification integrations. It is a good fit if you want full control, need to monitor internal services, and are comfortable running and maintaining a server. The main caveat for any self-hosted monitor is independence: if it runs on the same server, network or provider as your site, it can go down at the same time.
How the main SaaS options differ
At a general level, based on their public pages: Pingdom is a SolarWinds product that includes synthetic and real-user monitoring. Better Stack combines uptime monitoring with incident management, logs and other modules. UptimeRobot, StatusCake and Hyperping offer free plans and paid tiers focused on uptime and status pages. Uptime Tracker focuses on uptime, heartbeat and API monitoring with status pages and on-call features; it currently runs checks from one probe location, with additional regions planned, and does not offer voice-call alerts or browser-based synthetic checks. Compare plans yourself, since features and prices change.
Run a trial
- Recreate your five most important monitors in each shortlisted tool.
- Connect your real alert channels and send test notifications.
- Trigger a controlled failure (for example, a maintenance page that removes your keyword) and time how long each tool takes to alert.
- Check how the incident, status page and history look afterwards.
- Confirm import and export work, so you are not locked in.
Uptime Tracker offers a 14-day Team trial with no card required, a Free plan that allows commercial use, and import from CSV or an Uptime Kuma backup. See pricing and website monitoring.
Frequently asked questions
What should I look for in an uptime monitoring tool?
Look at supported check types, the minimum check interval on the plan you would buy, how failures are confirmed, alert channels and on-call features, status pages, team seats, data retention, pricing model, API access and what happens to your data on downgrade or cancellation.
Is self-hosted uptime monitoring better than SaaS?
Neither is better in general. Self-hosted tools such as Uptime Kuma are free software and give full control, including monitoring internal services, but you must run, update, back up and host them independently. SaaS tools need no maintenance and run outside your infrastructure, at a subscription cost.
What is Uptime Kuma?
Uptime Kuma is an open-source, self-hosted uptime monitoring tool. You install it on your own server or container and maintain it yourself. It supports many check types and notification channels and is popular with developers and homelab users.
How many monitors do I need?
Most small businesses need 10 to 30: homepage, login, checkout, API health endpoints, DNS, domain and certificate checks, plus heartbeats for each important scheduled job. Count one monitor per user journey and per critical dependency.
Can I switch uptime monitoring tools easily?
Usually, if both tools support import and export. Check for CSV export of monitors and history. Uptime Tracker can import monitors from CSV and from an Uptime Kuma JSON backup, and exports monitors, incidents and check results as CSV.