Top HACK GitHub Repositories & Tools (2026)

Open-source feature management platform

Open-source desktop and web app for Meta's Muse Code CLI. Runs Muse natively on Windows, macOS and WSL2, with a file viewer, inline diffs, approvals and signed auto-updating installers.

An open source re-implementation of RollerCoaster Tycoon 2 🎢

CNCF Jaeger, a Distributed Tracing Platform

OpenAPI Generator allows generation of API client libraries (SDK generation), server stubs, documentation and configuration automatically given an OpenAPI Spec (v2, v3)

This project aims to create an easy to use, extendable and customizable server for a MMORPG called "MU Online".

TiDB is built for agentic workloads that grow unpredictably, with ACID guarantees and native support for transactions, analytics, and vector search. No data silos. No noisy neighbors. No infrastructure ceiling.

Home Assistant Custom component to calculate estimated power consumption of lights and other appliances

The modern video player for macOS.

Mutation testing for .NET core and .NET framework!

🔐 Securely share sensitive information with automatic expiration & deletion after a set number of views or duration. Track who, what and when with full audit logs.

OWASP Coraza WAF is a golang modsecurity compatible web application firewall library

OPNsense GUI, API and systems backend

Open source GPS tracking platform - self-hosted or managed, 200+ device protocols

Open source compliance automation for SOC 2, GDPR, ISO27001, NIST 800-53, and more

Official Sentry SDKs for JavaScript

Apache Iceberg

A framework that allows developers to cobble together a better UI for their own WPF applications with minimal effort.

📝 Annotation tool for macOS

A Rust compiler front-end for IDEs