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

Introducing Showboat and Rodney, so agents can demo what they’ve built - 10th February 2026
How StrongDM's AI team build serious software without even looking at the code - 7th February 2026
Running Pydantic's Monty Rust sandboxed Python subset in WebAssembly - 6th February 2026

open-source 285 operatingsystems 1 symbian 1 windows 39

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