Product analytics, observability, uptime and alerting.https://opensource.fyi/categories/analytics-monitoring/https://opensource.fyi/projects/posthog/https://opensource.fyi/projects/posthog/PostHog is an open source product analytics platform that combines event analytics, session replay, feature flags, A/B testing and surveys.Tue, 10 Nov 2026 12:10:00 GMTproduct-analyticssession-replayfeature-flagshttps://opensource.fyi/projects/prometheus/https://opensource.fyi/projects/prometheus/Prometheus is an open source monitoring system and time-series database. It scrapes metrics over HTTP, stores them, and evaluates queries and alert rules.Tue, 10 Nov 2026 12:00:00 GMTmonitoringmetricstime-seriesalertinghttps://opensource.fyi/projects/grafana/https://opensource.fyi/projects/grafana/Grafana is an open source platform for dashboards and visualisation. It queries Prometheus, Loki, databases and dozens of other sources and adds alerting.Tue, 10 Nov 2026 11:50:00 GMTobservabilitydashboardsmetricshttps://opensource.fyi/projects/plausible-analytics/https://opensource.fyi/projects/plausible-analytics/Plausible is an open source, privacy-focused web analytics tool. It uses a small script, collects no personal data, needs no cookie banner and can be self-hosted.Mon, 09 Nov 2026 00:00:00 GMTweb-analyticsprivacygdprcookielesshttps://opensource.fyi/projects/uptime-kuma/https://opensource.fyi/projects/uptime-kuma/Uptime Kuma is an open source, self-hosted uptime monitor. It checks HTTP, TCP, DNS, ping and more, sends alerts through dozens of services and publishes status pages.Tue, 03 Nov 2026 00:00:00 GMTuptime-monitoringstatus-pageself-hostedalerting