Looking for an open-source alternative to Splunk? Below are 2 community-built tools that offer similar functionality — all free, open source, and ready to use or self-host. Ranked by GitHub stars.
A horizontally-scalable, highly-available log aggregation system inspired by Prometheus, tailored for on-demand, distributed log processing.
A highly efficient and cost-effective alternative to Elasticsearch, Splunk, and Datadog, designed for handling logs, metrics, traces, Real User Monitoring, error tracking, and session replay at a petabyte scale.
The top picks from this list are Loki, OpenObserve — all maintained, free to use, and self-hostable.
Yes. Every tool listed here is open source and free to use. Many can be self-hosted on your own infrastructure, which means no subscription fees and full control over your data.
Most of the alternatives listed are self-hostable. Check each tool's page for hosting details, system requirements, and licensing terms.
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