Built in one marathon night for my self-hosted AI system. Each one is a single HTML file. No signup, no tracking, no backend — your data stays in your browser. Free forever.
I run a self-hosted AI system at home called Lumen. On the night of April 29, 2026, I built 58 small browser tools to fill in the gaps in my daily workflow — JSON formatters, cron builders, kanban boards, habit trackers, the works. Each one is a single self-contained HTML file. No frameworks, no build step, no telemetry. Open one, use it, close the tab. Your data lives in your browser's localStorage.
I'm publishing them under MIT so anyone can fork, embed, or self-host them. They're not novel — there's a JSON formatter on every dev's bookmarks bar — but they're the ones I built, polished enough to use every day, and packaged together so you don't need 58 different tabs.
Stars and forks welcome. Issues and PRs even more welcome.