Flink’s core is a streaming dataflow engine that provides data distribution, communication, and fault tolerance for distributed computations over data streams.
Cost / License
- Free
- Open Source
Since
- Since 2013
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 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, Wazuh, Graylog and Prometheus.
Alternatives list
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.
54 OpenObserve alternativesA cloud-native observability platform built specifically for logs, metrics, traces, analytics, RUM (real user monitoring — performance, errors, session replay) designed to work at petabyte scale.
Cost / License
- Freemium
- Open Source (AGPL-3.0)
Since
- Since 2025
United States
XpoLog is a log analysis and management platform with super fast index and search, problems analysis and reports for mission critical operations.
+1
App Enlight- provides a helpful interface to let you and your team save time spent on debugging and reproducing errors and performance problems from a production environment.
Cost / License
- Freemium
- Proprietary
Since
- Since 2013
Alerts
- Discontinued
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.
Cost / License
- Free
- Open Source
Since
- Since 2020
+1
Edge Delta takes a modern approach to observability and gives development and operations teams the ability to understand and control observability data, simplify log management and speed up troubleshooting.
- United States
+1
Harvesters watch log files for changes, send new log messages to the server, which broadcasts to web clients. Log messages are tagged with stream, node, and log level information based on user configuration.
L
New Relic Insights is a real-time analytics platform that collects billions of data points directly from your software and transforms them into actionable insights about your software, customers, and business.
- United States
Sumo Logic is the industry’s leading, secure and purpose-built cloud-based machine data analytics service that leverages big data for real-time IT insights.
+2
Gravwell is an all-you-can-ingest data fusion analytics platform that enables complete context and root cause analytics for security and business data.
Cost / License
- Freemium
- Proprietary
Since
- Since 2019
- United States
+1
logsniffer is a sophisticated open source web tool for viewing, monitoring and analyzing log data. It provides a modern and intuitive end to end web interface and log viewer to keep an eye on all your logs - in one place and in real-time.
Cost / License
- Free
- Open Source
Since
- Since 2015
Alerts
- Discontinued
- Warning
