Two tools. Both run entirely in the browser — no server calls, no data leaves the page.
Astrocartography Calculator
Enter birth data, get planetary lines on a world map. Check any location for relocated angles, active lines within orb, current transits, and relocated house placements.
The Open Atlas
Four location systems on one axis — astrocartography, feng shui, numerology, astro-tarot. What each one claims, where it came from, what the evidence is, and how they compose.