buying guide
The Best Uptime Monitoring Tools in 2026
“Is the site up?” is the one monitoring question everyone needs answered and nobody wants to overpay for. From a free container to a polished paid all-in-one, ranked by who each one actually fits.
- 1 Uptime Kuma Uptime / synthetic
The self-hosted default: one container, a friendly UI, HTTP/TCP/ping/DNS checks and a status page. Start here.
The catch: Single-instance by design — local SQLite, no HA/clustering/failover, and it degrades hard past a few hundred monitors, so the thing watching your uptime is itself a single point of failure.
- 2 updown.io Uptime / synthetic
The cheapest credible SaaS — pure pay-as-you-go, roughly €0.60/mo to watch one site every minute. Beloved for its simplicity.
The catch: Intentionally minimal — no on-call/escalation, limited integrations, few advanced check types — perfect for "ping my sites cheaply," wrong if you need incident management.
- 3 Better Stack Uptime / synthetic
The slick all-in-one if you want uptime + status pages + on-call together and will pay for polish.
The catch: The per-responder + usage-based-monitors + telemetry-add-on model makes the bill genuinely hard to predict, and it feels steep for small teams once you turn on the features that make it appealing.
- 4 UptimeRobot Uptime / synthetic
The freemium classic everyone starts on — just note the free tier is now non-commercial-use-only and capped at 5-minute checks.
The catch: The famous free tier is now non-commercial-use-only and capped at 5-min intervals, so a real business or 1-minute checks push you onto paid tiers.
- 5 Gatus Uptime / synthetic
Config-as-code uptime + status page in a tiny Go binary. The GitOps crowd's pick — no UI to click.
The catch: Everything is YAML with no UI for adding/editing endpoints — great for GitOps purists, friction for anyone who wants to click "add a monitor," and the status page is spartan.
- 6 Checkly Uptime / synthetic
For developers who want real browser/transaction checks written as Playwright code, not just pings.
The catch: Browser checks are the point but also the cost driver — heavy Playwright suites burn "browser run" quotas fast, and it assumes a team comfortable writing/maintaining test code.
- 7 Hyperping Uptime / synthetic
Uptime + status pages + on-call priced per monitor rather than per seat — friendly to small teams that add people.
The catch: The "no per-seat" pitch is real, but the monitor-count tiers jump in big steps (50→100→1,000), so mid-sized teams land awkwardly between plans and overpay.
Four ways to answer "is it up?"
| Uptime Kuma open source / community (Louis Lam) | UptimeRobot UptimeRobot | Better Stack Better Stack | updown.io independent (Adrien Rey-Jarthon) | |
|---|---|---|---|---|
| Category | Uptime / synthetic | Uptime / synthetic | Uptime / synthetic | Uptime / synthetic |
| License | Open source | Proprietary | Proprietary | Proprietary |
| Deployment | Self-hosted | SaaS | SaaS | SaaS |
| Monitors | NetworkServersSyntheticsK8s | NetworkSyntheticsServers | SyntheticsLogsTracesMetricsServers | SyntheticsNetwork |
| Pricing | Free / OSS Free tier ✓ | Free / OSSFlat tier Free tier ✓ | Flat tierUsage credits Free tier ✓ | Usage credits Free tier ✓ |
| Cost | Free | Low | Low Per-responder + per-50-monitors + telemetry add-on; positions as a cheaper all-in-one. | Low Pure pay-as-you-go (~€0.60/mo for one site @ 1-min). |
| Self-host effort | Turnkey | — | — | — |
| Maturity | Rising | Incumbent | Rising | Established |
| The catch | Single-instance by design — local SQLite, no HA/clustering/failover, and it degrades hard past a few hundred monitors, so the thing watching your uptime is itself a single point of failure. | The famous free tier is now non-commercial-use-only and capped at 5-min intervals, so a real business or 1-minute checks push you onto paid tiers. | The per-responder + usage-based-monitors + telemetry-add-on model makes the bill genuinely hard to predict, and it feels steep for small teams once you turn on the features that make it appealing. | Intentionally minimal — no on-call/escalation, limited integrations, few advanced check types — perfect for "ping my sites cheaply," wrong if you need incident management. |
Built from the monitoring tool database — figures live there, not here.
FAQ
What is the best free uptime monitor?
Self-hosted, Uptime Kuma is the standard — free, open source, runs in one container, and includes a status page. For free SaaS, UptimeRobot is the classic but its free tier is now non-commercial-only; updown.io is extremely cheap pay-as-you-go if you need commercial use.
Do I need a separate status page tool?
Often not. Several uptime tools (Uptime Kuma, Better Stack, Hyperping, Gatus) bundle a status page, which leaves dedicated status-page products like Atlassian Statuspage mainly for larger orgs with heavy incident-communication needs.
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