Simon Willison’s Weblog

Lumberjack, the cross-platform JavaScript logger and console. Neat tool for debugging in place of alert statements.

Posted 12th September 2005 at 12:47 am

Recent articles

Wilson Lin on FastRender: a browser built by thousands of parallel agents - 23rd January 2026
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

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