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Dev tools · June 21, 2026

Athar

Open-source, self-hosted telemetry & notification engine

What it does

Athar is a self-hosted, high-performance Telemetry & Push Notification Engine built for absolute scalability and sub-ms ingestion latency. It's a production-grade open-source alternative to expensive third-party services, giving you 100% control over data and privacy. Built with an event-driven architecture: NestJS, Kafka (event buffer), ClickHouse (OLAP DB for fast aggregations), and Redis/BullMQ. Spin it up with one command: `docker compose up` 🐋

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