Live Earth and natural hazard data for AI agents via MCP.
A Modern Fortran framework for simulating interacting quantum many-body systems.
A polygon flip puzzle whose solvability is equivalent to the Four Color Theorem.
Visual keyboard remapping with layers, exported to keyd or AutoHotkey.
Email alerts for new Vienna subsidized housing listings — the notification service the site does not have.
Geotag photos retroactively using your Google Location History.
Batch-render LaTeX equations to cropped, transparent PNG and SVG.
A toy epidemic: particles in a box, colliding and infecting each other.