nomoat / UptimeObserver / Alternatives
Alternatives to UptimeObserver
UptimeObserver: Checks your websites, SSL certificates, DNS and domains every 30 seconds and alerts you when something breaks or expires. Here are 21 other products that do a similar job. Of these, 16 have a free plan, 1 carries proof such as verified revenue, update history or uptime.
- Uptimepage
Checks websites and APIs from several regions, alerts whoever is on call and runs a public status page.
Free plan · Uptime and monitoring · Agencies
- WatchCron
Alerts you when a cron job misses its ping or a site, certificate or domain has a problem, with status pages included.
Free plan · Uptime and monitoring · Agencies
- Checkmate
Open-source monitoring you host yourself for websites, servers, containers and SSL, with status pages and alerts.
Free · Uptime and monitoring · Developers
- KIT.domains
Tracks domain renewals, SSL certificates and DNS records for many sites and alerts you before something lapses or breaks.
Since 2024
Subscription · Uptime and monitoring · Agencies
- Phare
Watches websites and APIs, alerts you on several channels, tracks incidents and hosts status pages, all from an independent EU company.
Since 2025
Free plan · Uptime and monitoring · Agencies
- DevHelm
Checks your APIs and sites every 30 seconds, tracks vendor outages and hosts a status page for SaaS teams.
Since 2026
Free plan · Uptime and monitoring · Developers
- EasyMonitor
Self-hosted uptime checks from probes in several regions that agree before alerting, plus status pages for small teams.
Free · Uptime and monitoring · Developers
- Logdash
Checks your site is up, sends alerts to Telegram or a webhook, and adds logs, metrics and a public status page.
Since 2025
Free plan · Uptime and monitoring · Developers
- OpenUptime
Open source uptime checks, alerts and public status pages that you or an AI agent can manage, with no charge per monitor.
Free plan · Uptime and monitoring · Developers
- Peekaping
Uptime checks for sites, APIs, databases and queues you run on your own server, with alerts and public status pages.
Free · Uptime and monitoring · Developers
- Pingify
Watches your sites, certificates, DNS records and scheduled tasks around the clock and tells your team as soon as something fails.
Since 2024Updated 4 months ago
Subscription · Uptime and monitoring · Developers
- StatusScout
Watches your site's uptime, SSL expiry, security headers, DNS records and exposed files, and alerts you when one fails.
Free · Uptime and monitoring · Developers
- Domain Locker
Keeps every domain you own in one dashboard and alerts you to expiry dates, DNS and SSL changes.
Free plan · Uptime and monitoring
- FlareWarden
Scans your site to suggest checks for SSL, DNS and outside services like payment providers, then monitors them with status pages.
Free plan · Uptime and monitoring · Online sellers
- Flowtriq
Spots DDoS attacks on your servers within a second and triggers firewall, BGP or scrubbing responses.
Since 2026
Subscription · Uptime and monitoring · Developers
- ilert
Sends alerts to on-call staff, handles their rotas and runs status pages so tech teams can respond to outages quickly.
Since 2020
Free trial · Uptime and monitoring · Developers
- Runframe
Runs incidents from alert to postmortem for engineering teams, with on-call rotas, escalations and status pages included.
Free plan · Uptime and monitoring · Developers
- UptimeBuddy
Check websites, ports, SSL and DNS from your phone and get alerts when a service goes down.
Free · Uptime and monitoring · Developers
- UptimeToolbox
Monitors websites and Linux servers, sends alerts by email, SMS or call, and hosts branded status pages on your domain.
Free plan · Uptime and monitoring · Developers
- Visual Sentinel
Watches websites and servers for downtime, SSL, DNS and visual breakage, with client reports for agencies.
Since 2026Updated 22 days ago
Subscription · Uptime and monitoring
- Certimon
Tracks SSL certificates on any number of domains and warns you before they expire via Telegram, Teams, PagerDuty or webhooks.
Since 2025
Free · Uptime and monitoring