Simon Willison’s Weblog

HeatMapAPI (via) Cool (or should that be hot?) API for adding heat maps to any Google Maps application.

Posted 19th July 2008 at 11:46 pm

Recent articles

First impressions of Claude Cowork, Anthropic's general agent - 12th January 2026
My answers to the questions I posed about porting open source code with LLMs - 11th January 2026
Fly's new Sprites.dev addresses both developer sandboxes and API sandboxes at the same time - 9th January 2026

google-maps 53 heatmaps 3 mapping 54

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