Top POI GitHub Repositories & Tools (2026)

Free, open-source, offline-first Point of Sale for cafes, restaurants, and food businesses.

Open-source IFC toolkit: WebGPU rendering, columnar in-memory store, exact-arithmetic geometry kernel. Runs from a CDN. 30+ TypeScript packages and 5 Rust crates.

Accept Bitcoin payments. Free, open-source & self-hosted, Bitcoin payment processor.

Quick and Easy server testing/validation

:date: Easy!Appointments - Self Hosted Appointment Scheduler

Linear optimization software

Laravel-based web POS system with Vue.js, Tailwind CSS, inventory management, sales processing, customer records, reports, and modular extension support.

PnP PowerShell

Large collection of number systems providing custom arithmetic for mixed-precision algorithm development and optimization for AI, Machine Learning, Computer Vision, Signal Processing, CAE, EDA, control, optimization, estimation, and approximation.

Endpoint detection for Windows, Linux, and macOS. Sigma, YARA, and IOC rules on native telemetry. Written in Rust. No cloud account required.

Full stack web application powering peering at over 250 Internet Exchange Points (IXPs) globally.

The PnP Core SDK is a modern .NET SDK designed to work for Microsoft 365. It provides a unified object model for working with SharePoint Online and Teams which is agnostic to the underlying API's being called

POS open-source, simple things only need simple solutions

Locally runnable server with built-in data caching, providing both tick-level historical and consolidated real-time cryptocurrency market data via HTTP and WebSocket APIs

Free, open-source CMTrace replacement for Windows log files: ConfigMgr/SCCM, Intune IME, and Autopilot ESP diagnostics, DSRegCmd triage, .evtx viewing, real-time tailing, and Windows error-code lookup. Windows, macOS, Linux.

Dependency analysis and optimization toolkit for modern JavaScript and TypeScript codebases. Enforce dependency graph hygiene and remove unused code with a very fast CLI.

Hunt every Endpoint in your code, expose Shadow APIs, map the Attack Surface.

This is an Open Source Java EE based Hospital Information Management System

A rclcpp-compatible true zero-copy IPC middleware that supports all ROS message types, including message structs already generated by rosidl.

Munki-like Windows App Management