Upright

Self-hosted synthetic monitoring engine using Playwright and Prometheus metrics.

PlatformWebfree

Upright is a self-hosted synthetic monitoring system that runs Playwright-based health-check probes from multiple geographic sites and reports the results as Prometheus metrics, with alerting through AlertManager — an open-source alternative to paying for a hosted synthetic-monitoring service.

Website

Full match profile

Behind the summary, Matchbox keeps a richer profile of Upright - the signals our matcher actually reads to decide when to surface it. It stays private; claim the listing to see and control it.

Problem & pain-point mapping
Who we surface it to (audience fit)
What it's a strong alternative to
Trust & credibility signals

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