Monitoring en observability

Distributed, RESTful search and analytics engine.

Parseable is an open source, unified infrastructure observability platform built in Rust on a data lake architecture. It tracks logs, metrics, traces, and events across apps, agents, and systems, reducing storage costs by up to 90% through columnar telemetry compression.

Distributed and RESTful search engine.

Highly customizable dashboard that puts all your feeds in one place.

Like Prometheus, but for logs.

An AI-powered next-generation open source real-time observability system.

The open-source observability database. One columnar engine for metrics, logs, and traces, on object storage.

The Prometheus monitoring system and time series database.

Highly available Prometheus setup with long term storage capabilities. A CNCF Incubating project.

Powerful error tracking platform with wide language support and a robust API.

Stay up-to-date with web-site content changes.

Lightweight server monitoring with historical data, docker stats, and alerts.

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.

An opinionated GoLang framework for accelerated microservice development. Built in support for databases and observability.

Grafana Tempo is a high volume, minimal dependency distributed tracing backend.

Intel® Performance Counter Monitor (Intel® PCM)

DNS-Blocklists: For a better internet - keep the internet clean!

Agent for collecting, processing, aggregating, and writing metrics, logs, and other arbitrary data.

Grafana Mimir provides horizontally scalable, highly available, multi-tenant, long-term storage for Prometheus.

A fancy self-hosted monitoring tool

APM, Application Performance Monitoring System

CNCF Jaeger, a Distributed Tracing Platform

Fluentd: Unified Logging Layer (project under CNCF)

Cloud-native OSS search engine for observability

Monoscope lets you ingest and explore your logs, traces and metrics. We store these in S3 compatible buckets. Query in natural language via LLMs.

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.

⭐️ 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:

Build agents that monitor and act on your behalf.

Scalable datastore for metrics, events, and real-time analytics

High-performance, scalable time-series database designed for Industrial IoT (IIoT) scenarios

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

Open source APM: OpenTelemetry traces, metrics, and logs

Inspektor Gadget is a set of tools and framework for data collection and system inspection on Kubernetes clusters and Linux hosts using eBPF

Checkmk - Best-in-class infrastructure & application monitoring

OpenTelemetry Go API and SDK

Laminar - open-source observability platform purpose-built for AI agents. YC S24.

Free and open log management

Menu-driven Proxmox VE toolkit — post-install, backup/restore and a live web dashboard for the homelab.

:tropical_fish: Beats - Lightweight shippers for Elasticsearch & Logstash

The ultimate datacenter management solution for Proxmox VE and XCP-NG. Unified multi-cluster control, intelligent load balancing, and seamless cross-cluster VM migrations — all in one beautiful interface.

🕵️‍♂️ TUI for sniffing network traffic using eBPF on Linux

VictoriaMetrics: fast, cost-effective monitoring solution and time series database

APM, (Application Performance Management) tool for large-scale distributed systems.

OpenTelemetry Collector

An application observability facade for the most popular observability tools. Think SLF4J, but for observability.

Apache Log4j is a versatile, feature-rich, efficient logging API and backend for Java.

Logging operator for Kubernetes

Cross-platform lib for process and system monitoring in Python

Watcher - Open Source AI-powered Cyber Threat Intelligence & Hunting Platform. Developed with Django & React JS.

Open-Source Network Management, Monitoring, ITOM, and Security Analytics

a collection of scripts for MikroTik RouterOS

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 monitoring, etc. Combined with SigNoz MCP and a native AI teammate (in SigNoz Cloud) it helps you build more resilient apps.

Zipkin is a distributed tracing system

Logstash - transport and process your logs, events, or other data

Build your own AI SRE agents. The open source toolkit for the AI era.

A declarative JavaScript library for application development using cloud services.

:chart_with_upwards_trend: Capturing JVM- and application-level metrics. So you know what's going on.

Automatic CPU speed & power optimizer for Linux

Real-time monitoring of IT components and services, such as networks, servers, VMs, applications and the cloud.

The OpenTelemetry .NET Client

Kiali project, observability for the Istio service mesh

A set of modern Grafana dashboards for Kubernetes.

Blazing fast, structured, leveled logging in Go.

Exporter for machine metrics

:trollface: Self-hosted, lightweight server and website monitoring and O&M tool

Hubble - Network, Service & Security Observability for Kubernetes using eBPF

The Fastest Unified Streaming SQL Engine in a Single C++ Binary. ⚡ Millisecond latency. 100+ GB/s throughput. Continuously compute real-time context from streams, logs, metrics, events, and CDC.

OpenTelemetry community content

Kepler (Kubernetes-based Efficient Power Level Exporter) is a Prometheus exporter that measures energy consumption metrics at the container, pod, and node levels in Kubernetes clusters.

Zero Allocation JSON Logger

Build production-ready applications in TypeScript

Realtime log viewer for containers. Supports Docker, Swarm and K8s.

Yet another cross-platform graphical process/system monitor.

Distributed tracing without code changes. 🚀 Instantly monitor any application using OpenTelemetry and eBPF

Official Zabbix Dockerfiles

Gonzo! The Go based TUI log analysis tool

OpenTelemetry Python API and SDK

Python package for the evaluation of odometry and SLAM

Monitor network traffic per executable

Structured, pluggable logging for Go.

Resilience4j is a fault tolerance library designed for Java8 and functional programming

Libre Hardware Monitor is free software that can monitor the temperature sensors, fan speeds, voltages, load and clock speeds of your computer.

Next-generation AI Agent Optimization Platform: Cozeloop addresses challenges in AI agent development by providing full-lifecycle management capabilities from development, debugging, and evaluation to monitoring.

Prometheus instrumentation library for Python applications

The open-source AIOps and alert management platform

Add-on agent to generate and expose cluster-level metrics.

Native Operating System and Hardware Information

Aya is an eBPF library for the Rust programming language, built with a focus on developer experience and operability.

OpenTelemetry Collector distribution with programmable pipelines

A simple, modern server dashboard, primarily used by smaller private servers

OpenTelemetry JavaScript Client

The Rust OpenTelemetry implementation

The CNCF sandbox for observability visualisation. Already supports Prometheus, Tempo, Loki and Pyroscope - more data sources to come!

Prometheus instrumentation library for JVM applications

The core of our monitoring platform with a powerful configuration language and REST API.

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

Expose Docker containers as Tailscale Services using label-based configuration.

Pluggable foundation blocks for building distributed apps.

Fast and easy to use database for logs, which can efficiently handle terabytes of logs

🐳 Elastic Stack (ELK) v9+ on Docker with Compose. Pre-configured out of the box to enable Logging, Metrics, APM, Alerting, ML, and SIEM features. Up with a Single Command.

Sends your logs to files, sockets, inboxes, databases and various web services

Fast and Lightweight Logs, Metrics and Traces processor for Linux, BSD, OSX and Windows

Network logger for Apple platforms

NLog - Flexible and Structured Logging for various .NET Platforms

Instant Kubernetes-Native Application Observability

A simple server monitor tool.

An elegant debug assistant for the Laravel framework.

M3 monorepo - Distributed TSDB, Aggregator and Query Engine, Prometheus Sidecar, Graphite Compatible, Metrics Platform

AI observability platform for production LLM and agent systems.

Performance monitoring tools for Linux

📈 Open source, privacy-first web analytics — a cookie-less Google Analytics alternative with built-in error tracking and performance monitoring. Self-host it or use our cloud. Get started for free!

Rapid development of self-documenting APIs

Golang gRPC Middlewares: interceptor chaining, auth, logging, retries and more.

Prometheus client for node.js

Glances an Eye on your system. A top/htop alternative for GNU/Linux, BSD, macOS and Windows operating systems.

Simple, powerful, and fast logging for Python.

A process for collecting metrics using JMX MBeans for Prometheus consumption

High-performance log ingestion and ETL engine

Nagios Core

eBPF-based Linux kernel observability 🚀🚀

Webbased Logging Software for Radio Amateurs. Enhanced QSO logging, statistics and maps for your browser.

An environmental monitoring and regulation system

Utilities for Sysmon

A log viewer for Kubernetes troubleshooting

An extensible Java library for HTTP request and response logging

A fast & simple, yet powerful & flexible logging framework for macOS, iOS, tvOS, watchOS and visionOS

Nightingale is to monitoring and alerting what Grafana is to visualization.

Log activity inside your Laravel app

Terminal-based CPU stress and monitoring utility

sitespeed.io is an open-source tool for comprehensive web performance analysis, enabling you to test, monitor, and optimize your website’s speed using real browsers in various environments.

Fast and beautiful Log Viewer for Laravel

A Logging API for Swift

Logging implementation for Rust

eBPF-based autoinstrumentation of web applications and network metrics

🕵️‍♀️ Validate schema, get schema change notifications, validate operations, find breaking changes, look for similar types, schema coverage

Domain name portfolio management and tracker.

Privacy-first website analytics. Tiny, simple, and cookie-free.

Open-source runtime AI agent security tool - monitors and controls AI agents, catching malicious tool use, prompt injection, and policy drift in real time, before the agent acts.

Nginx virtual host traffic status module

A fast and powerful log viewer and processor that converts JSON logs or logfmt logs into a clear human-readable format.

SNMP Exporter for Prometheus

A simple logging interface for Go

Python logging made (stupidly) simple

A Vulkan and OpenGL overlay for monitoring FPS, temperatures, CPU/GPU load and more.

Application level tracing for Rust.

A highly scalable real-time graphing system

Main repository for Datadog Agent

Prometheus Exporter for Valkey & Redis Metrics. Supports Valkey 9.x, 8.x, 7.x and various Redis versions

Personal flight tracker and viewer.

Lightweight Multiplatform logging framework for Kotlin. A convenient and performant logging facade.

A framework for secure and scalable network traffic analysis - https://netcap.io

Log file navigator

Record the change log from models in Laravel

Alerta monitoring system

Your single pane of glass for real-time analytics into MySQL/MariaDB & ProxySQL

Percona Monitoring and Management: an open source database monitoring, observability and management tool

Prometheus rule linter/validator

OpenTelemetry Auto Instrumentation using eBPF

Open-source data management for multimodal AI. Query, trace, and govern with a lineage-native, format-agnostic lakehouse for agents and teams. Supports biological formats and registries - by the creators of Scanpy. 🍊YC S22

Production-Ready MCP Server Framework • Build, deploy & scale secure AI agent infrastructure • Includes Auth, Observability, Debugger, Telemetry & Runtime • Run real-world MCPs powering AI Agents

Export Django monitoring metrics for Prometheus.io

A golang implementation of endlessh (SSH tarpit) exporting Prometheus metrics, visualized by a Grafana dashboard.

Yet another LogCat reader for Android

The POCO C++ Libraries are powerful cross-platform C++ libraries for building network- and internet-based applications that run on desktop, server, mobile, IoT, and embedded systems.

CheckCle is a self-hosted, open-source monitoring platform for seamless, real-time full-stack systems, applications, and infrastructure. It provides real-time uptime monitoring, distributed checks, incident tracking, and alerts. All deployable anywhere.

🦥 Easy and simple Prometheus SLO (service level objectives) generator

🦀🌡️ Real-time system monitor for Apple Silicon Macs (M1–M5). No sudo. TUI, JSON/Prometheus metrics server, and Rust library.

Get Alerts from your Docker Container Logs

Laravel Pulse is a real-time application performance monitoring tool and dashboard for your Laravel application.

Pluggable health checks for Django applications

NetObserv provides CNI-agnostic network observability of Kubernetes clusters.

http://firewalla.com

Plugins for Wazuh Dashboard

Browser extension for examining SAML messages

一款面向泛前端产品研发全生命周期的效率平台。

A minimal, colorful Go logging library 🪵

Open source framework for processing, monitoring, and alerting on time series data

mactop - Apple Silicon Monitor Top

Instrument your FastAPI with Prometheus metrics.

Your window into all of your data

highlight.io: The open source, full-stack monitoring platform. Error monitoring, session replay, logging, distributed tracing, and more.

Jupiter: Governance-oriented Microservice Framework.

Ultra-low-latency asynchronous C++17 logging and metrics library for performance-critical applications

Symfony Monolog Bundle

Alert dashboard for Prometheus Alertmanager

Beautiful and understandable static analysis tool for PHP

Headless Chromium-based web performance metrics collector and monitoring tool

Open-source, end-to-end platform for evaluating, observing, and improving LLM and AI agent applications. Tracing · Evals · Simulations · Datasets · Gateway · Guardrails. Self-hostable. Apache 2.0.

Unobtrusive logging library with zero dependencies for Deno, Node.js, Bun, browsers, and edge functions

SIMD-accelerated distances, dot products, matrix ops, geospatial & geometric kernels for 16 numeric types — from 6-bit floats to 64-bit complex — across x86, Arm, RISC-V, and WASM, with bindings for Python, Rust, C, C++, Swift, JS, and Go 📐

Digging through logs is not observability. It's hope — wide events, structured errors, TypeScript-first, every runtime.

Web interface for managing Haproxy, Nginx, Apache and Keepalived servers

ProxCenter is an alternative to VMware vCenter for Proxmox environments. It provides a modern, intuitive web interface to manage multiple Proxmox VE clusters and Proxmox Backup Server instances from a single pane of glass.

The only tool you need to know what is happening and how to fix it.