Self-hosted alternatives to UptimeRobot

Uptime Guard

Uptime monitor for websites, ports, DNS, certificates and cron jobs, with Telegram alerts and public status pages

What a UptimeRobot user would miss

It has no ICMP ping, no multi-location checks, alerts only through Telegram and browser push, and a basic public status page.

What it adds

It also checks domain registration expiry and runs multi-step script checks, sign-in needs a password and an authenticator code, and data stays in your Cloudflare account.

• Yes HTTP(S) website and API monitoring with response times. HTTP checks with a status range; response time is recorded per check.
• Yes Keyword monitoring. Optional body keyword present or absent, or a JSON field value.
• Partly Ping and TCP port monitoring. TCP port checks; no ICMP ping.
• Yes Cron job (heartbeat) monitoring. Heartbeat monitors with a unique /ping URL and a grace window.
• Yes SSL certificate and DNS record monitoring. TLS certificate expiry, domain expiry and DNS record checks.
• No Checks from multiple locations. Checks run from the Worker with no location choice.
• Partly Alerts by email, Slack, webhook and push. Telegram and Web Push only; email, Slack and Discord are on the roadmap.
• Partly Public status pages. Read-only public page per project with each monitor's status and 90-day uptime; no incident posts.

Sources:github.com/calmray-solutions/uptime-guard#readmegithub.com/calmray-solutions/uptime-guard/blob/main/worker/src/checks.tsgithub.com/calmray-solutions/uptime-guard/blob/main/worker/src/index.ts

Serverless uptime monitor and status page with HTTP, TCP and keyword checks, deployed through GitHub Actions

What a UptimeRobot user would miss

It has no heartbeat or certificate checks, monitors are defined in a config file rather than a dashboard, and alerts go only through webhooks.

What it adds

A monitor can run from a chosen region, the status page can be password protected, and a single monitor can be embedded in another page.

• Yes HTTP(S) website and API monitoring with response times. HTTP(S) checks with custom method, headers, body and expected status codes.
• Yes Keyword monitoring. ResponseKeyword and responseForbiddenKeyword options.
• Partly Ping and TCP port monitoring. TCP port checks; no ICMP ping.
• No Cron job (heartbeat) monitoring. No heartbeat monitor type.
• No SSL certificate and DNS record monitoring. SSL certificate checks are unchecked on the README roadmap; no DNS checks.
• Partly Checks from multiple locations. A monitor can run from a chosen region through a check proxy that you set up.
• Partly Alerts by email, Slack, webhook and push. Webhook only, with a grace period; no built-in email.
• Yes Public status pages. Status page with groups, incident history, scheduled maintenance, own domain through a CNAME and an optional password.

Sources:github.com/lyc8503/uptimeflare#featuresgithub.com/lyc8503/UptimeFlare/blob/main/uptime.config.tsgithub.com/lyc8503/UptimeFlare/wiki/Setup-notification

Uptimer

Uptime monitor and status page with HTTP and TCP checks, incidents and webhook alerts, on Workers, Pages and D1

What a UptimeRobot user would miss

It has no heartbeat, certificate, DNS or ping monitors and no multi-location checks, and alerts go only through webhooks and Telegram.

What it adds

Webhook messages use templates and can carry an HMAC-SHA256 signature, and uptime and latency history can be exported as CSV.

• Yes HTTP(S) website and API monitoring with response times. HTTP(S) probes with headers, body and status code allow or deny lists; per-monitor interval from 60 seconds.
• Yes Keyword monitoring. Keyword assertions on the response.
• Partly Ping and TCP port monitoring. TCP port checks; no ICMP ping.
• No Cron job (heartbeat) monitoring. No heartbeat monitor type.
• No SSL certificate and DNS record monitoring. No certificate or DNS checks.
• No Checks from multiple locations. Probes run from the cron Worker with no location choice.
• Partly Alerts by email, Slack, webhook and push. Webhooks to Discord, Slack, ntfy or any URL, plus a Telegram preset; no email.
• Yes Public status pages. Public status page with uptime, latency charts, incidents and maintenance windows.

Sources:github.com/vriancao/uptimer#featuresgithub.com/VrianCao/Uptimer/blob/master/docs/notifications.mdgithub.com/VrianCao/Uptimer/blob/master/apps/worker/src/schemas/incidents.ts