Poco.

Poco's 30-day customer-perceived uptime is 100.000%. The figure is weighted (full-outage = 1.0, degraded = 0.3) so component blips don't collapse the score the way a raw incident-count would.

Sign up to CheckUpstream and add Poco to a watchlist. We send incident alerts via Slack, email, webhook, or PagerDuty within seconds of detection — covering both the official status page and community signals (HN, Reddit, Bluesky, Cloudflare Radar).

Poco is an open-source C++ class library used by developers to build networked and cross-platform software. It provides reusable components for tasks such as networking, threading, XML processing, and database access, and is typically used through its C++ APIs and libraries rather than a hosted dashboard or web interface. Software engineers integrate Poco into desktop, server, and embedded applications.

We poll Poco's official status page on a 1-5 minute cadence, parse its RSS / Atom feed as a fallback, ingest community signals from social platforms, and aggregate per-org SDK telemetry. Multiple sources reduce false positives versus any single feed alone.