The top-rated alternative to UptimeRobot is Uptime Kuma, which is free and open source. People also recommend Better Stack, Tianji, Pingdom and Kener. Website Monitoring Tools like UptimeRobot are a crowded field, with more than 100 alternatives for the web, self-hosting, Windows, Linux and Mac.
CrawlRhino SEO Monitor is a website uptime and SEO monitoring tool that tracks downtime, response times, and changes to important SEO elements such as titles, meta descriptions, and headings.
United Kingdom
Sentinel provides a centralised location in which you can see Domain, SSL and DNS information - all whilst checking that your SLAs are being met. Don't let your customers inform you that something is wrong because you didn't know.
United Kingdom
Aura Monitoring is an EU-hosted uptime monitoring for websites and APIs. SSL, DNS, domain-expiry and WCAG accessibility checks, status pages, alerts via email, SMS and Teams.
Sweden
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Monitor your websites, APIs, and cron jobs. Get email alerts on the free plan, or add Slack, Discord & Telegram on Pro. AI Powered Incident reports and Content change detection, custom status pages, and REST API included.
SecuryBlack brings together everything you need to keep client infrastructure alive in one place: uptime monitoring for all your client websites, internal server metrics via OxiPulse (open source Rust agent), heartbeat checks for backups and cron jobs, and continuous breach...
SpainEU
Certly monitors SSL certificates, domain registration expiry, and DNS/DNSSEC across all your sites — and alerts you on Slack, Discord, email, or webhook before anything lapses, so you never find out from your customers.
Japan
Hybrid observability platform combining code-based tests and AI-driven monitoring. Real-time browser testing, API monitoring, and self-healing tests.
AlertKick is an affordable on-call alerting and incident notification platform built for DevOps engineers at startups and SMBs - a great no-configuration monitoring and security without the enterprise pricing.
United Kingdom
A modern, self-hosted status page built with Next.js and Payload CMS. Full flexibility, SMS & email notifications, beautiful dark/light themes.
GermanyEU
Koguma extends Uptime Kuma's reach to monitor remote networks that your server cannot access directly. Install locally and report back seamlessly.
United States
Klaxel is a hosted domain-health scorecard built for managed service providers who run domains on behalf of many clients. It watches the signals that silently break a client relationship — email authentication (SPF, DKIM, DMARC), blacklist and reputation status, SSL/TLS...
United States
SolidPing is an open-source uptime monitor you can run yourself or use hosted. It ships as one Go binary or one Docker container, uses SQLite by default and PostgreSQL if you want it.
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