Simon Willison’s Weblog

CSSEdit 2.5 Out Now! (via) Like John Gruber says, this is the best implementation of application tabs I’ve ever seen.

Posted 23rd April 2007 at 8:26 pm

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

cssedit 2 john-gruber 37 tabs 2 ui 26

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