Simon Willison’s Weblog

The Widening HTML5 Chasm. Simon St. Laurent’s commentary on the HTML5/Adobe situation. The most interesting piece I’ve read on it so far.

Posted 15th February 2010 at 9:51 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

adobe 29 html5 84 simon-st-laurent 2 w3c 22 whatwg 16

Monthly briefing

Sponsor me for $10/month and get a curated email digest of the month's most important LLM developments.

Pay me to send you less!

Sponsor & subscribe