riemann
The premium Open Source alternative to Datadog
🎯 Best for:Infrastructure teams requiring real-time alerting on high-velocity event streams.
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%