uptimepage
Uptime monitoring, status pages and on-call scheduling in one tool
Uptimepage is an open-source uptime monitor, public status page and on-call scheduler in one product. It runs eight check types: HTTP, TCP, DNS, TLS certificate, domain expiry, ICMP ping, cron heartbeats and scripted browser logins. A failing check opens an incident automatically and posts it to a branded status page on your own subdomain.
On-call schedules rotate people daily, weekly or on a custom length, with overrides, and escalation policies page channels and schedules level by level...