Open source observability platform for logs, metrics, traces, RUM (web, android, ios), Session replay, pipelines, SLO and LLM observability. A sophisticated, simple and highly performant alternative to Datadog, Splunk, and Elasticsearch with 140x lower storage costs and single binary deployment.

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• Updated Nov 12, 2026
• TypeScript

Cloud-native OSS search engine for observability

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• Updated Nov 11, 2026
• Rust

Resolve production issues, fast. An open source observability platform unifying session replays, logs, metrics, traces and errors powered by ClickHouse and OpenTelemetry.

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• Updated Nov 12, 2026
• TypeScript

Free and open log management

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• Updated Nov 12, 2026
• Java

Security Onion 16.04 - Linux distro for threat hunting, enterprise security monitoring, and log management

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• Updated Apr 16, 2021

syslog-ng is an enhanced log daemon, supporting a wide range of input and output methods: syslog, unstructured text, queueing, SQL & NoSQL.

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• Updated Nov 11, 2026
• C

100x Efficient Log Management than Splunk 🚀 Reduce your observability cost by 90%

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• Updated Mar 12, 2026
• Go

Open source security data lake for threat hunting, detection & response, and cybersecurity analytics at petabyte scale on AWS

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• Updated Jan 8, 2025
• Rust

Nerdlog: fast, remote-first, multi-host TUI log viewer with timeline histogram and no central server

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• Updated Oct 3, 2026
• Go

Compressed Log Processor (CLP) is a free log management tool capable of compressing logs and searching the compressed logs without decompression.

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• Updated Nov 12, 2026
• C++

Utility logger library for storing logs into database and push them to remote server for debugging

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• Updated Mar 27, 2024
• Java

🛡️ Open-source, self-hosted log management. Privacy-first alternative to Datadog & ELK. Lightweight, GDPR-compliant, and deployed in minutes with Docker.

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• Updated Nov 10, 2026
• TypeScript

Open-source, self-hosted logs and traces with full-text search directly on S3-compatible object storage.

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• Updated Nov 12, 2026
• Svelte

Official Graylog Docker image

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• Updated Nov 4, 2026
• Shell

Extensible log shipper with input/output plugins, buffering, parsing, data masking, and small memory/CPU footprint

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• Updated Sep 12, 2024
• JavaScript

A powerful terminal app for structured log streaming

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• Updated Sep 2, 2026
• Go

Open Source SIEM (Security Information and Event Management system).

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• Updated Aug 24, 2023
• Python

Ansible role which installs and configures Graylog

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• Updated Nov 4, 2026
• Jinja

Sematext Docker Agent - host + container metrics, logs & event collector

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• Updated Dec 9, 2023
• JavaScript

🔐 Securing Your Digital Sanctuary, Trust None, Protect Everything.

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• Updated Sep 25, 2026
• Shell