Weekly digest of Simon Willison's blog covering hands-on experiments with LLMs and coding agents, event live blogs, and short notes on new releases and tools. Readers get practical write-ups of what he built, what he learned, and roundups of links, quotes and open source releases.

Developer blog on building OpenMU, an open-source MMORPG game server, covering architecture decisions, performance work and new features. Readers get detailed engineering write-ups with code-level reasoning and measured results.

Posts from NLnet Labs, the maker of open-source internet infrastructure software such as Unbound, NSD and Routinator. Readers get first-hand accounts of security audits, regulatory impact on open source, and how AI affects maintaining critical software.

Different Shelf is an essay newsletter that follows plausible-sounding software and organisational ideas, such as monorepos, InnerSource and developer tooling, until their practical consequences emerge. Readers get detailed, first-person accounts of real engineering investigations alongside structured arguments about how companies coordinate software work.