riemann

The premium Open Source alternative to Datadog

🎯 Best for:Infrastructure teams requiring real-time alerting on high-velocity event streams.
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EPL-1.0License

What is riemann?

Replaces traditional monitoring agents with a low-latency stream processing engine for network events. Built in Clojure, it enables complex event processing and alerting using a functional DSL for high-throughput environments.

Tech Stack
ClojureMonitoring & Logs

Why riemann?

  • Low latency processing
  • Functional DSL flexibility
  • High throughput capacity

Limitations

  • Clojure learning curve
  • JVM memory overhead
  • Complex initial configuration
3/3/2026
Last Update
506
Forks
30
Issues
EPL-1.0
License
Financial Leak Detected

Stop the "SaaS Tax"

Your team could be burning cash. Switching to riemann instantly boosts your runway.

Competitor Cost
-$1,440
/ year (est. based on Datadog)
Self-Hosted
$0
/ year
Team Size10 Users
150+
SAVE 100%

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