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Ask HN: What are the best open-source tools for anomaly detection?
1 magundu 1 5/16/2025, 7:06:34 PM
I’m looking for open-source tools or libraries for detecting anomalies in time series data, logs, or metrics. Ideally, something that can be integrated into monitoring pipelines (e.g. for observability, security, or fraud detection).
Would love to hear what tools you’ve used in production or projects — and what worked (or didn’t). Bonus points for tools with active communities or that are easily customizable.
Thanks!
Comments (1)
poobear22 · 7h ago
I had a good time with R for statistical process control. I don't think I used any libraries at the time (this was a long time ago) except maybe Pareto charts, but I primarily worked with mean time between failures of events. My issue was I did not control the faulty applications, but received a lot of "blame" for their failures as we managed the high performance computer systems. I wanted to be able to shine a flashlight on the various operational jobs and the frequency of their failures. I generally felt the application owners were often times lazy in getting to a root cause analysis, and it was never my job to do this with their specialized applications. It did a pretty good job taking the heat off my team, the results were automatically generated and always available. But, changing the culture was always difficult.