Simon Willison’s Weblog

Crowdvine, iCalico, Pathable, a Study in Collusion. Stitching sites together around a single user database using subdomains and simple signed cookies.

Posted 12th July 2007 at 11:09 pm

Recent articles

Large Language Models can run tools in your terminal with LLM 0.26 - 27th May 2025
Highlights from the Claude 4 system prompt - 25th May 2025
Live blog: Claude 4 launch at Code with Claude - 22nd May 2025

kellan-elliott-mccrea 19 foocamp 3 crowdvine 1 icalico 1 collusion 1 pathable 1 sso 3 signedcookies 5

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