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Free Splunk Alternatives

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 50 alternatives to Splunk and many of them is free so hopefully you can find a suitable replacement. Other interesting free alternatives to Splunk are Prometheus, Sematext Logs, Graylog and Logstash.

Splunk alternatives are mainly Web Log Analyzers but may also be Log Management Tools or Log Analyzers. Filter by these if you want a narrower list of alternatives or looking for a specific functionality of Splunk.
This page was last updated Jul 1, 2022
Splunk
  27
  • FreemiumProprietary
  • Mac
  • Windows
  • Linux

Splunk is software that provides unique visibility across your entire IT infrastructure from one place in real time. Only...

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  1. Grafana

    • FreeOpen Source
    • Mac
    • Windows
    • Linux
    • BSD
    • Self-Hosted
    • Cloudron
    • Node.JS

    Grafana provides a powerful and elegant way to create, explore, and share dashboards and data with your team and the world.

    Grafana vs Splunk opinions
    Some users think Grafana is a great alternative to Splunk, some don't.

    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.

    Negative comment over 4 years ago
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    11

    It's not a SIEM tool. Rather, it just displays arbitrary data.

    Negative comment about 3 years ago
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    -4
  2. Prometheus

    • FreeOpen Source
    • Mac
    • Windows
    • Linux
    • Cloudron

    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.

    Prometheus vs Splunk opinions
    pros, cons and recent comments

    System / performance monitoring centric

    Negative comment almost 3 years ago
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    1


  3. Sematext Logs

    • FreemiumProprietary
    • Online
    • Self-Hosted
    • elasticsearch
    • Software as a Service (SaaS)
    • Kibana

    Sematext lets you store, index, and search all kinds of logs (server logs, container logs, application logs, mobile app logs…), enabling access to them in one place. Sematext also analyzes your logs for optimal health while detecting anomalies, so you don’t have to.

    Sematext Logs vs Splunk opinions
    Almost everyone thinks Sematext Logs is a great alternative to Splunk.

    With Sematext Cloud/Enterprise you can use any log shipping format or shipper you want (syslog, Logstash, Fluentd, Flume, nxlog, Filebeat). Plus, Sematext allows you to correlate logs with performance metrics quickly, easily and without contracts or commitments.

    Positive comment over 4 years ago
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    0

    It's a hosted and on-premises log centralizing solution

    Positive comment about 6 years ago
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    0
  4. Graylog

    • FreeOpen Source
    • Mac
    • Linux
    • Self-Hosted
    • Java

    Graylog is an open source syslog implementation that stores your logs in Elasticsearch. It consists of a server and web interface written in Java that accepts your syslog messages via TCP or UDP (or GELF messages) and stores it in the database.

    Graylog vs Splunk opinions
    Most users think Graylog is a great alternative to Splunk.

    Pretty easy to setup once you figure out the log capture scripts. Then it's very powerful and realiable.

    Positive comment almost 2 years ago
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    0

    freeware with good documentation

    Positive comment about 2 years ago
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    0
  5. Logstash

    • FreeOpen Source
    • Linux
    • Java Mobile
    • BSD

    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.".

    Logstash vs Splunk opinions
    Some users think Logstash is a great alternative to Splunk, some don't.

    The "L" in the ELK-Stack. i. E. part of a splunk alternative

    Positive comment almost 3 years ago
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  6. Loki

    • FreeOpen Source
    • Mac
    • Windows
    • Linux
    • BSD
    • Self-Hosted

    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.

    No screenshots yet
  7. Graphite

    • FreeOpen Source
    • Mac
    • Linux
    • Python
    • fontconfig
    • Django

    Graphite is a highly scalable real-time graphing system.

  8. Fluentd

    • FreeOpen Source
    • Mac
    • Linux

    Fluentd is a fully free and open-source log management tool that simplifies your data collection and storage pipeline. It eliminates the need to maintain a set of ad-hoc scripts.

  9. AlienVault

    • FreemiumProprietary
    • Linux

    Alienvault integrates and correlates many popular network and security monitoring tools in one suite, inlcuding OSSEC, nfdump, log analyzers, nagios, and nessus and analyzes it against its own community-driven threat feed.

    Most users think AlienVault is a great alternative to Splunk.
  10. Prelude

    • FreeOpen Source
    • Linux

    Prelude is a Universal Security Information & Event Management (SIEM) system. It collects, normalizes, sorts, aggregates, correlates and reports all security-related events independently of the product brand or license giving rise to such events.

Showing 10 of 43 alternatives