Uptime monitoring alternatives
Every comparison below is written the same way: what the other tool is genuinely good at, where Pulsy differs, and a side-by-side matrix covering self-hosted Pulsy, Pulsy Cloud, and the competing tool. Pulsy is open source under AGPL-3.0 — self-host it free forever, or let us run it.
Self-hosted and open-source monitors
Tools you run yourself. Pulsy competes here on licence terms, multi-user isolation, and localization — not on being the only free option.
Pulsy vs Uptime Kuma
Open-source uptime monitoring, self-hosted or fully managed
Read the comparisonPulsy vs Gatus
A web UI and multi-user accounts on top of the same self-hosted freedom
Read the comparisonPulsy vs Zabbix
Uptime monitoring in an afternoon, not an infrastructure project
Read the comparisonPulsy vs Healthchecks.io
Endpoint uptime monitoring, where Healthchecks.io watches your cron jobs
Read the comparison
Hosted monitoring services
Closed-source SaaS on per-monitor, per-seat, or per-tier pricing. Pulsy offers the same managed convenience on flat plans, plus a free self-hosted build.
Pulsy vs UptimeRobot
The open-source UptimeRobot alternative
Read the comparisonPulsy vs Better Stack
The open-source Better Stack (Better Uptime) alternative
Read the comparisonPulsy vs StatusCake
The open-source StatusCake alternative
Read the comparisonPulsy vs Cronitor
The open-source alternative for uptime and TLS monitoring
Read the comparisonPulsy vs Hyperping
The open-source Hyperping alternative
Read the comparisonPulsy vs Oh Dear
The open-source alternative for uptime, TLS, and status pages
Read the comparisonPulsy vs Freshping
Where to go now that Freshping has shut down
Read the comparisonPulsy vs Site24x7
The open-source alternative without the enterprise surface area
Read the comparisonPulsy vs Uptime.com
The open-source Uptime.com alternative
Read the comparison
Enterprise monitoring platforms
Broad observability suites with enterprise pricing. Pulsy is narrower on purpose: uptime, TLS expiry, incidents, and status pages, done well.
Pulsy vs Pingdom
The open-source Pingdom alternative
Read the comparisonPulsy vs Checkly
Uptime and TLS monitoring, where Checkly does browser-level E2E
Read the comparisonPulsy vs Datadog Synthetics
The open-source alternative when you only need availability
Read the comparisonPulsy vs New Relic Synthetics
The open-source alternative when you only need availability
Read the comparison
Frequently asked questions
- What is the best open-source uptime monitoring tool?
- It depends on what you need. Uptime Kuma is excellent for a single operator who wants many check protocols. Pulsy suits teams that need per-user isolation, TLS-expiry alerting, custom-domain status pages, and a localized RTL dashboard, and it offers a managed option running the same AGPL-3.0 code. Gatus and Zabbix serve very different shapes of problem again.
- Is Pulsy really free?
- The software is free forever under AGPL-3.0 — self-host it and every capability is on, with no tiers, no feature flags, and no per-monitor fees. Pulsy Cloud is optional paid hosting of that same code for teams who would rather not run a server.
- Can I switch from a hosted monitor without downtime?
- Yes. Run Pulsy alongside your current monitor, point it at the same URLs with the same intervals and thresholds, confirm alerts reach your channels, then retire the old service. Nothing forces a hard cutover.
- Why does Pulsy compare itself to open-source tools too?
- Because those are the tools its users actually evaluate. Several of them are very good, and the comparisons say so — the point is to help you pick correctly, not to claim Pulsy wins every row.
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