Simon Willison’s Weblog

Symbian Operating System, Now Open Source and Free. With Symbian now open source, are there any widely used operating systems left (besides Windows) that don’t have an open source core?

Posted 4th February 2010 at 8:38 am

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

open-source 252 operatingsystems 1 windows 39 symbian 1

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