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public-domain

Road Systems Watch is an open-source civic infrastructure platform that maps and tracks road construction activity across cities, counties, and states. It combines citizen reporting, public project data, contracting records, and AI-driven analysis to create a living record of how roads are built, funded, and repeatedly repaired over time. The system provides transparent, structured insights into infrastructure activity, including project history, funding sources, and contractor involvement when available. https://roxanneardary.com/road-systems-watch/

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/

Android Gears 3D. https://play.google.com/store/apps/details?id=org.gears3d.gears3d

Generic, reusable and well documented public domain parallel "exact cover with colors" solver, with examples.

The MD0 license is based upon the CC0-1.0 license, but attempts to waive more Intellectual Property rights and deny patents and trademarks(no matter how fruitless; the intention shall be made clear).

https://gears3d.org

https://web-work.tools Resources for Independent Web-Workers: SEO, Publishing, Git, GitHub Pages, Indieweb, Ubuntu Linux, and Static Site Generators.