SensorFlow: Open-Source, Self-Hosted Event Analytics Built on ClickHouse

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A developer has released SensorFlow, an open-source, self-hosted event analytics platform designed as a cost-effective alternative to managed tools like PostHog. The stack connects a Go-based data collector to ClickHouse for storage and Apache Superset for visualization, keeping all data on the user's own servers. Unlike per-event pricing models, SensorFlow charges an annual license fee starting at $699, currently discounted to $349 for first orders, with the first month free. The tool is SQL-first and intentionally narrow in scope, omitting features like session replay and feature flags that broader suites offer. The project is available on GitHub under the Apache-2.0 license, with a live demo and a single-script local installation that requires no Kubernetes.

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