The best free alternative to Splunk is Grafana, which is also Open Source. If that doesn't suit you, our users have ranked more than 100 alternatives to Splunk and loads of them is free so hopefully you can find a suitable replacement. Other interesting free alternatives to Splunk are Better Stack, Graylog, Logstash and Wazuh.
Grafana provides a powerful and elegant way to create, explore, and share dashboards and data with your team and the world.
AI-driven SRE platform offering real-time infrastructure monitoring, incident management, log analytics, traces, error tracking, metrics, real user monitoring, status pages, and a warehouse, with full data ingestion, centralized dashboard, custom alerts, and reduced costs.
Graylog is a powerful Security Information and Event Management (SIEM) solution offering a robust log analytics platform that simplifies the collection, search, analysis, and alerting of all types of machine-generated data.
Logstash is an open source, server-side data processing pipeline that ingests data from a multitude of sources simultaneously, transforms it, and then sends it to your favorite "stash.".
Wazuh is a free and open source platform used for threat prevention, detection, and response. It is capable of protecting workloads across on-premises, virtualized, containerized, and cloud-based environments.
Prometheus is an open-source systems monitoring and alerting toolkit originally built at SoundCloud. Since its inception in 2012, many companies and organizations have adopted Prometheus, and the project has a very active developer and user community.
Tracks event timelines, grouped exception alerts, log searches, SQL query and job performance, third-party integrations, notifications, cache patterns, and scheduled tasks across any Laravel deployment, offering comprehensive health insights and instant setup.
An open source observability platform: Unify session replays, logs, traces, and errors – all without the Datadog price tag.
Grafana Loki is a horizontally-scalable, highly-available, multi-tenant log aggregation system inspired by Prometheus. It is designed to be very cost effective and easy to operate. It does not index the contents of the logs, but rather a set of labels for each log stream.
Sematext Logs is a cloud-based SaaS log management solution that offers you real-time actionable insights into your log analytics with hosted ELK as a service, in the cloud or on-premises.
Goxe is a high-performance log reduction tool written in Go, designed to reduce noise in observability pipelines. It ingests logs via Syslog/UDP, normalizes and filters them, and aggregates identical or repetitive messages into a single-line format with occurrence counts.
![This screenshot shows Goxe's terminal output. It displays a 'Partial Report' where repetitive log messages (like update versions and errors) are grouped with their occurrence count (e.g., [74961] repetitions). At the bottom, it highlights the tool's high efficiency, showing a memory footprint of less than 1MB while processing large volumes of data.](https://img.alternativeto.net/s/618x394/avif/goxe_881513_full.png)
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Grafana is NOT a log monitor. It is only a graphing solution for logs and metrics from many different data sources but you will need solutions to get those logs and metrics in the first place.