Performance Monitoring GitHub Repositories (2026) · Open Source Tools

A free, powerful, multi-purpose tool that helps you monitor system resources, debug software and detect malware. Brought to you by Winsider Seminars & Solutions, Inc. @ https://windows-internals.com

Sudoless Apple Silicon system monitor (native SwiftUI GUI) with ANE / Media Engine / memory-bandwidth tracking

Measure helps mobile teams monitor and fix crashes, ANRs, bugs, and performance issues. The open source alternative to Firebase Crashlytics.

Free, open-source SQL Server and Postgres performance monitoring. Collectors, real-time alerts, graphical plan viewer, MCP server for AI analysis. Supports SQL 2016-2025, Azure SQL, AWS RDS, Postgres, Aurora Postgres.

Silky smooth profiling for Django

Open source APM: OpenTelemetry traces, metrics, and logs

Caliper is an instrumentation and performance profiling library

Sentry SDK for .NET

Performances & exceptions monitoring for Ruby on Rails applications

Open-Source Testing, Monitoring, and AI SRE — as Code

🟥 AppSignal for Ruby gem

:rocket: Go Distributed Tracing & Metrics Sensor for Instana

Native open-source system monitor for macOS — Apple Silicon, SMC sensors, processes, disks, network and system health.

A simple system monitoring and alerting tool to monitor server HW stats.

DBA Dash - SQL Server Monitoring Tool