Best Linux Open-Source Monitoring Software

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

High-performance time-series database for real‑time analytics

Simple and easy-to-use Python logging library

Monitoring system and time series database

Real-time system monitoring and performance troubleshooting

Cross‑platform real‑time system monitoring for admins and DevOps

Advanced Node.js process manager for production environments

Fast, header-only C++ logging library for high-performance applications

Fast, real‑time web log analyzer for system administrators