Open-source alternatives guide · Updated 2026
Compare the best free and open-source alternatives to Splunk — 16 verified projects with explicit catalog relationships. Inspect licenses, GitHub activity, self-hosting signals, and migration fit before you switch.
Official product reference Splunk↗Only explicit alternative relationships are shown—never inferred competitor claims.
This guide compares 16 verified open-source alternatives to Splunk, including Grafana, Apache Superset, ProjectDiscovery, and SigNoz.
Projects appear across Data & Analytics, Security & Privacy, and AI & Machine Learning. 6 options include a self-hosting signal — see the self-hosted catalog. Ranking follows public GitHub stars and recorded momentum—not vendor marketing. Compare projects side by side, then confirm license fit, migration effort, and operational ownership before adopting any option.
Strongest repository-activity signal: Grafana · Jump to ranking · 75.6K stars
Proprietary log analytics and observability platform.
Visit SplunkCompare capabilities, licensing, and ownership model. Stars help with discovery; they are not a security or product-fit guarantee.
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The open and composable observability and data visualization platform. Visualize metrics, logs, and traces from multiple sources like Prometheus, Loki, Elasticsearch, InfluxDB, Postgres and many more.
The open and composable observability and data visualization platform. Visualize metrics, logs, and traces from multiple sources like Prometheus, Loki, Elasticsearch, InfluxDB, Pos
Open-source alternative to Splunk
Apache Superset is a Data Visualization and Data Exploration Platform
Apache Superset is a Data Visualization and Data Exploration Platform Review the official repository, license, release activity, and deployment documentation before production adop
Open-source alternative to Splunk
Nuclei is a fast, customizable vulnerability scanner powered by the global security community and built on a simple YAML-based DSL, enabling collaboration to tackle trending vulnerabilities on the internet. It helps you
Nuclei is a fast, customizable vulnerability scanner powered by the global security community and built on a simple YAML-based DSL, enabling collaboration to tackle trending vulner
Open-source alternative to Splunk
SigNoz is an open-source, OpenTelemetry-native observability platform for your team and their AI agents. Get logs, metrics, and traces in one tool with features like APM, distributed tracing, log management, infra monito
SigNoz is an open-source, OpenTelemetry-native observability platform for your team and their AI agents. Get logs, metrics, and traces in one tool with features like APM, distribut
Make Your Company Data Driven. Connect to any data source, easily visualize, dashboard and share your data.
Make Your Company Data Driven. Connect to any data source, easily visualize, dashboard and share your data. Review the official repository, license, release activity, and deploymen
Open-source alternative to Splunk
Open source observability platform for logs, metrics, traces, frontend monitoring, pipelines and LLM observability. A sophisticated, simple and highly performant alternative to Datadog, Splunk, and Elasticsearch with 140
Open source observability platform for logs, metrics, traces, frontend monitoring, pipelines and LLM observability. A sophisticated, simple and highly performant alternative to Dat
Open-source alternative to Splunk
Logstash - transport and process your logs, events, or other data
Logstash - transport and process your logs, events, or other data Review the official repository, license, release activity, and deployment documentation before production adoption
Open-source alternative to Splunk
Resolve production issues, fast. An open source observability platform unifying session replays, logs, metrics, traces and errors powered by ClickHouse and OpenTelemetry.
Resolve production issues, fast. An open source observability platform unifying session replays, logs, metrics, traces and errors powered by ClickHouse and OpenTelemetry. Review th
Open-source alternative to Splunk
Coroot is an open-source observability and APM tool with AI-powered Root Cause Analysis. It combines metrics, logs, traces, continuous profiling, and SLO-based alerting with predefined dashboards and inspections.
Coroot is an open-source observability and APM tool with AI-powered Root Cause Analysis. It combines metrics, logs, traces, continuous profiling, and SLO-based alerting with predef
Open-source alternative to Splunk
Open-source observability for your GenAI or LLM application, based on OpenTelemetry
Open-source observability for your GenAI or LLM application, based on OpenTelemetry Review the official repository, license, release activity, and deployment documentation before p
Open-source alternative to Splunk
🧊 Open source LLM observability platform. One line of code to monitor, evaluate, and experiment. YC W23 🍓
🧊 Open source LLM observability platform. One line of code to monitor, evaluate, and experiment. YC W23 🍓 Review the official repository, license, release activity, and deploymen
Open-source alternative to Splunk
AI observability platform for production LLM and agent systems.
AI observability platform for production LLM and agent systems. Review the official repository, license, release activity, and deployment documentation before production adoption.
Open-source alternative to Splunk
Open source APM: OpenTelemetry traces, metrics, and logs
Open source APM: OpenTelemetry traces, metrics, and logs Review the official repository, license, release activity, and deployment documentation before production adoption.
Open-source alternative to Splunk
Open-source security automation platform for teams and AI agents
Open-source security automation platform for teams and AI agents Review the official repository, license, release activity, and deployment documentation before production adoption.
Open-source alternative to Splunk
Checkmk - Best-in-class infrastructure & application monitoring
Checkmk - Best-in-class infrastructure & application monitoring Review the official repository, license, release activity, and deployment documentation before production adoption.
Open-source alternative to Splunk
⭐️ The Open-Source Polyglot Observability Warehouse: Light, Fast, Cloud Native, Drop-in Grafana LGTMP alternative :rocket: Indie All-in-One Opentelemetry, Loki, Prometheus, Tempo, Pyroscope On-Prem Alternative :star:
⭐️ The Open-Source Polyglot Observability Warehouse: Light, Fast, Cloud Native, Drop-in Grafana LGTMP alternative :rocket: Indie All-in-One Opentelemetry, Loki, Prometheus, Tempo,
Map must-have capabilitiesList the workflows in Splunk you cannot drop during migration.
Verify the licenseConfirm it fits your use, distribution, and compliance model. Browse license briefs.
Run a proof of conceptTest real data, integrations, clients, and failure modes. Use Compare for side-by-side checks.
Plan ownershipAssess upgrades, backups, support, and an exit path. Read when self-hosting is worth it.
OpenSourceChoice currently lists 16 projects with an explicit alternative relationship to Splunk. Catalog highlights include Grafana, Apache Superset, and ProjectDiscovery. Rankings follow public GitHub stars and recorded momentum—not paid placement. Match capabilities and license fit to your workflow before adopting any option.
Most catalogued alternatives publish source under OSI or source-available licenses and are free to inspect. Hosting, commercial support, or cloud model APIs may still cost money. Always read the project license for your use case.
6 options in this list carry a self-hosting signal. Confirm the official install guide, backups, upgrades, and hardening steps before production.
Map must-have Splunk workflows, verify license and compliance fit, run a proof of concept with real data and integrations, then plan ownership for upgrades, backups, support, and an exit path.
Narrow the same alternatives by search, license, tags, or self-hosting signals when you need a tighter shortlist.
The open and composable observability and data visualization platform. Visualize metrics, logs, and traces from multiple sources like Prometheus, Loki, Elasticsearch, InfluxDB, Postgres and many more.
Data & AnalyticsOpen-source projects grouped in this category for discovery and comparison.#
TypeScriptProjects tagged with this topic in the verified catalog.
Github ActionsProjects tagged with this topic in the verified catalog.
JavaScriptProjects tagged with this topic in the verified catalog.
SplunkProprietary log analytics and observability platform.Apache Superset is a Data Visualization and Data Exploration Platform
Data & AnalyticsOpen-source projects grouped in this category for discovery and comparison.#TypeScriptProjects tagged with this topic in the verified catalog.Github ActionsProjects tagged with this topic in the verified catalog.JavaScriptProjects tagged with this topic in the verified catalog.SplunkProprietary log analytics and observability platform.Nuclei is a fast, customizable vulnerability scanner powered by the global security community and built on a simple YAML-based DSL, enabling collaboration to tackle trending vulnerabilities on the internet. It helps you
Security & PrivacyOpen-source projects grouped in this category for discovery and comparison.#
GoProjects tagged with this topic in the verified catalog.Github ActionsProjects tagged with this topic in the verified catalog.JavaScriptProjects tagged with this topic in the verified catalog.
Self-hostedThis project carries a self-hosting or local-deployment signal. Verify the official install guide before production use.SplunkProprietary log analytics and observability platform.SigNoz is an open-source, OpenTelemetry-native observability platform for your team and their AI agents. Get logs, metrics, and traces in one tool with features like APM, distributed tracing, log management, infra monito
AI & Machine LearningOpen-source projects grouped in this category for discovery and comparison.#TypeScriptProjects tagged with this topic in the verified catalog.Github ActionsProjects tagged with this topic in the verified catalog.JavaScriptProjects tagged with this topic in the verified catalog.Self-hostedThis project carries a self-hosting or local-deployment signal. Verify the official install guide before production use.AI-nativeThis project includes AI-native capability signals in the catalog metadata.SplunkProprietary log analytics and observability platform.Make Your Company Data Driven. Connect to any data source, easily visualize, dashboard and share your data.
Data & AnalyticsOpen-source projects grouped in this category for discovery and comparison.#
PythonProjects tagged with this topic in the verified catalog.Github ActionsProjects tagged with this topic in the verified catalog.JavaScriptProjects tagged with this topic in the verified catalog.SplunkProprietary log analytics and observability platform.Open source observability platform for logs, metrics, traces, frontend monitoring, pipelines and LLM observability. A sophisticated, simple and highly performant alternative to Datadog, Splunk, and Elasticsearch with 140
AI & Machine LearningOpen-source projects grouped in this category for discovery and comparison.#TypeScriptProjects tagged with this topic in the verified catalog.Github ActionsProjects tagged with this topic in the verified catalog.JavaScriptProjects tagged with this topic in the verified catalog.AI-nativeThis project includes AI-native capability signals in the catalog metadata.SplunkProprietary log analytics and observability platform.Logstash - transport and process your logs, events, or other data
Data & AnalyticsOpen-source projects grouped in this category for discovery and comparison.#
JavaProjects tagged with this topic in the verified catalog.Github ActionsProjects tagged with this topic in the verified catalog.
CSSProjects tagged with this topic in the verified catalog.Self-hostedThis project carries a self-hosting or local-deployment signal. Verify the official install guide before production use.SplunkProprietary log analytics and observability platform.Resolve production issues, fast. An open source observability platform unifying session replays, logs, metrics, traces and errors powered by ClickHouse and OpenTelemetry.
Data & AnalyticsOpen-source projects grouped in this category for discovery and comparison.#TypeScriptProjects tagged with this topic in the verified catalog.Github ActionsProjects tagged with this topic in the verified catalog.JavaScriptProjects tagged with this topic in the verified catalog.Self-hostedThis project carries a self-hosting or local-deployment signal. Verify the official install guide before production use.SplunkProprietary log analytics and observability platform.Coroot is an open-source observability and APM tool with AI-powered Root Cause Analysis. It combines metrics, logs, traces, continuous profiling, and SLO-based alerting with predefined dashboards and inspections.
AI & Machine LearningOpen-source projects grouped in this category for discovery and comparison.#GoProjects tagged with this topic in the verified catalog.Github ActionsProjects tagged with this topic in the verified catalog.JavaScriptProjects tagged with this topic in the verified catalog.AI-nativeThis project includes AI-native capability signals in the catalog metadata.SplunkProprietary log analytics and observability platform.Open-source observability for your GenAI or LLM application, based on OpenTelemetry
AI & Machine LearningOpen-source projects grouped in this category for discovery and comparison.#PythonProjects tagged with this topic in the verified catalog.Github ActionsProjects tagged with this topic in the verified catalog.
NodeJSProjects tagged with this topic in the verified catalog.AI-nativeThis project includes AI-native capability signals in the catalog metadata.SplunkProprietary log analytics and observability platform.🧊 Open source LLM observability platform. One line of code to monitor, evaluate, and experiment. YC W23 🍓
AI & Machine LearningOpen-source projects grouped in this category for discovery and comparison.#TypeScriptProjects tagged with this topic in the verified catalog.Github ActionsProjects tagged with this topic in the verified catalog.JavaScriptProjects tagged with this topic in the verified catalog.AI-nativeThis project includes AI-native capability signals in the catalog metadata.SplunkProprietary log analytics and observability platform.AI observability platform for production LLM and agent systems.
AI & Machine LearningOpen-source projects grouped in this category for discovery and comparison.#PythonProjects tagged with this topic in the verified catalog.Github ActionsProjects tagged with this topic in the verified catalog.JavaScriptProjects tagged with this topic in the verified catalog.AI-nativeThis project includes AI-native capability signals in the catalog metadata.SplunkProprietary log analytics and observability platform.
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