Healthchecks.io

Sentry

getsentry/sentry

Popular

Error and performance monitoring with stack traces, session replay and release health; the default error tracker.

GlitchTip

glitchtip.com

Lightweight, self-hostable error tracking that is compatible with Sentry SDKs.

Bugsink

bugsink/bugsink

Rising

Simple self-hosted error tracker that accepts Sentry SDK events and runs as a single container.

Rollbar

rollbar.com

SaaS error monitoring with real-time grouping, deploy tracking and automated alerts.

Uptime Kuma

louislam/uptime-kuma

Popular

Self-hosted uptime monitor with a polished UI, status pages and 90+ notification integrations.

Gatus

TwiN/gatus

Rising

Developer-oriented health dashboard with YAML-configured endpoint checks, alerting and status pages.

Better Stack

betterstack.com

Rising

SaaS combining uptime monitoring, status pages, on-call and log management (formerly Better Uptime and Logtail).

Checkly

checklyhq.com

Monitoring as code: synthetic API and Playwright browser checks defined in TypeScript and run from CI.