GatusDefine endpoint health checks and alerts in configuration files.
Free Apache-2.0 software · No per-monitor licence quota · Always-on hosting and storage extra
Website uptime & API synthetic monitoring
Free alternatives to UptimeRobot
Find a free app for the parts of UptimeRobot you actually use.
Compare the free allowance and limitations on each app’s page. These are workflow alternatives, rather than identical copies.
Free options
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Uptime KumaCheck service uptime and publish status pages from your own server.
Free open-source software · bring a server and maintain it.