O

open-source

SignalParcel is an open-source platform that maps land ownership, operators, and licensing relationships using verified public records. It transforms fragmented data from government and regulatory sources into a structured, queryable graph that reveals how land is owned, operated, and managed across jurisdictions. https://roxanneardary.com/signalparcel/

WorkBench is an open-source creator platform designed to help designers, developers, artists, and gamers collaborate, build, and earn in a transparent ecosystem. It provides tools to track sales, reviews, and derivatives, while protecting original work through knockoff detection and attribution tracking. The platform includes a secure collaboration hub with end-to-end encryption, two-factor authentication, and mandatory KYC for all financial activity. Users can monetize their creations through multi-currency payments, micro-royalties on derivatives, and an integrated marketplace, all supported by real-time exchange rates and extensible open-source infrastructure. https://roxanneardary.com/workbench/

Rally Copilot is a rules-based Rally course design and optimization platform that combines structured federation logic with AI-assisted tools to help users design, validate, and refine competition-ready courses. It focuses on spatial clarity, readable movement flow, and federation compliance, allowing judges, instructors, and competitors to build and analyze Rally courses with precision and explainable AI support. https://roxanneardary.com/rally-copilot/

DrivePass is an open-source, privacy-first vehicle access platform that replaces traditional key fobs with secure, encrypted identity authentication. Designed for retrofit compatibility, it enables lock, unlock, remote start, and vehicle authorization through a zero-trust security architecture with mandatory 2FA, hardware-backed cryptography, and offline-first operation—giving users full control over access to their own vehicles without subscriptions or proprietary lock-in. https://roxanneardary.com/drivepass/

LocaleMaterials is an open-source, modular AI platform that helps users design and build with regenerative, locally sourced, and climate-adaptive materials. It analyzes geography, climate, and real-world supply chains to recommend the most economically and environmentally optimal building systems for any location, then translates those insights into practical, code-aware, build-ready guidance. https://roxanneardary.com/localematerials/

Open-source, offline-first farm management for small farms, market gardens, and co-ops. From seed to sale.

OmniScientia is a modular AI framework for scientific discovery that helps learners explore the natural world through curiosity, experimentation, and verified evidence. It combines adaptive AI tutoring, safe laboratory experiences, virtual experiment simulations, scientific source verification, and interdisciplinary learning across biology, chemistry, physics, Earth sciences, veterinary science, astronomy, and beyond. https://roxanneardary.com/omniscientia/

SolderSense is an open-source, privacy-first programmable mouse designed for full user control at every level—from hardware and firmware to macros and configuration. Built with auditable, reproducible components and a deterministic execution model, it eliminates telemetry, cloud dependency, and proprietary lock-in. It empowers users with secure, offline-first input control and optional local AI assistance, all while maintaining complete transparency and verifiability. https://roxanneardary.com/soldersense/

VINGuard is an open-source, VIN-based vehicle transparency platform that helps buyers and sellers access clear, verifiable vehicle history before a purchase is made. It aggregates accident records, title status, ownership history, maintenance logs, and AI-driven fraud detection into a unified transparency score, creating a more trustworthy and data-driven used car marketplace. https://roxanneardary.com/vinguard/

An attempt to build a high dynamic range microphone suitable for opera singlers or metal singers, where you are likely to get very large variation in volume but need to preserve the fine texture of the sound.

Sentryx is an open-source, modular cloud backup and data protection system designed to give users full control over their data through end-to-end encryption, distributed storage, and secure authentication. Built under the AGPL-3.0+ license, it combines a scalable architecture with optional AI-assisted intelligence and enterprise-grade security features, making it suitable for personal, organizational, and large-scale infrastructure use while remaining transparent and community-driven. https://gitlab.com/Roxanne_Ardary/sentryx

MeshCore is a modular, privacy-first infrastructure for managing digital identity, credentials, and secure authentication data across devices. Built as an encrypted, self-hostable system under the AGPL 3.0+ license, it unifies passwords, API keys, secure notes, and identity records into a connected identity graph. Designed with a strict modular architecture, MeshCore supports extensible components for autofill, sync, intelligence, and plugin-based expansion while keeping all sensitive data encrypted and under user control. https://roxanneardary.com/meshcore/

TrueRoute is an open-source, vehicle-aware navigation and travel intelligence platform that combines routing, real-time road conditions, scenic exploration, and AI-powered trip planning into a single modular system. Built on OpenStreetMap and designed for offline, mobile, web, and in-vehicle use, it adapts routes dynamically based on vehicle size, user intent, weather, and road conditions while turning every trip into a personalized travel experience. https://roxanneardary.com/trueroute/

Example architecture diagrams, pieces of diagrams, and examples for importing with URL feature of Red Hat's open-source software Portfolio Architecture tooling.

TerraGuild AI is a modular artificial intelligence specification for creating regenerative food forests, permaculture landscapes, and resilient ecological systems. It combines generative design, botanical intelligence, environmental analysis, and ecosystem modeling to help users design abundant landscapes that support food production, biodiversity, and long-term sustainability. https://roxanneardary.com/terraguild-ai/

Beekeeper’s Guide to the Universe is an open-source, AI-assisted ecological intelligence platform designed to help users understand, design, and sustain pollinator ecosystems. It combines bee biology knowledge systems, habitat engineering tools, climate and microclimate modeling, plant and forage planning, predator and disease identification, visual AI diagnosis, spatial mapping, and ecological simulation into a unified system. Users can upload images or environmental data to receive context-aware guidance on hive placement, species care, habitat creation, and ecosystem health. The platform emphasizes long-term ecological balance, explainable AI reasoning, and non-destructive intervention strategies to support sustainable pollinator environments across different regions and climates. https://roxanneardary.com/beekeepers-guide-to-the-universe/

StrataAI is an open-source, modular AI system that analyzes global gemstone markets to generate transparent, data-driven fair market valuations. By aggregating auction data, distributor listings, certification records, and geological origin information, it builds a reproducible pricing model for precious stones using machine learning and structured market intelligence. https://roxanneardary.com/strataai/

MediNet AI is an open-source, community-driven AI platform for medical and dental image analysis. It provides multi-modal disease detection, predictive modeling, patient engagement dashboards, and automated workflow tools. Designed for clinicians, researchers, and patients, MediNet AI combines accuracy, explainability, and accessibility, enabling improved diagnostics, preventive care, and healthcare collaboration worldwide. https://roxanneardary.com/medinet-ai/

Real-time system monitor that explains WHY your PC is slow, not just that it's slow. Built over 800 hours on a 94°C laptop. Open source, MIT licensed. HCK_Labs - Marcin Firmuga