Simon Willison’s Weblog

Why Greasemonkey is good for publishers (via) Free usability tips and bug fixing—your users know more than you do.

Posted 13th April 2005 at 4:09 pm

Recent articles

OpenAI are quietly adopting skills, now available in ChatGPT and Codex CLI - 12th December 2025
GPT-5.2 - 11th December 2025
Useful patterns for building HTML tools - 10th December 2025

adrian-holovaty 45 greasemonkey 54

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