Simon Willison’s Weblog

Twenty questions about the GPL. Jacob kicks off a fascinating discussion about GPLv3.

Posted 13th July 2009 at 11:59 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

gpl 4 gpl3 1 jacob-kaplan-moss 53 open-source 252 licenses 7

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