John Regehr is a computer scientist and expert in compilers, formal verification, and systems-level software engineering. His blog explores compiler optimizations, fuzzing, bugfinding, and formal-methods-assisted approaches to building reliable software.
Bartosz Milewski is a programmer and former theoretical physicist known for bridging category theory and practical software development. He writes about Haskell, C++, concurrency, and functional programming, and is the author of Category Theory for Programmers.
A. Jesse Jiryu Davis is a Senior Staff Research Engineer at MongoDB specializing in distributed systems, Python concurrency, and serverless architecture. He contributes to MongoDB drivers, async frameworks, and writes on software design and open source projects.
John D. Cook provides expert consulting in applied mathematics and data privacy, helping clients from tech, biotech, and legal industries—including Amazon, Google, Microsoft, and Amgen—solve complex problems efficiently.
Philip Zucker is a physics and computer science enthusiast documenting ideas and experiments in a lab-notebook-style blog, focused on functional programming, compilers, formal methods, and scientific computation.
SimonWillison.net is the long-running blog of Simon Willison, a software engineer, open-source creator, and co-author of the original Django framework. He writes about Python, Django, Datasette, AI tooling, prompt engineering, search, databases, APIs, data journalism, and practical software architecture. The blog includes detailed notes from experiments, conference talks, and real projects. Readers will find clear explanations of topics such as LLM workflows, SQL patterns, data publishing, scraping, deployment, caching, and modern developer tooling. Simon also publishes frequent micro-posts and TIL entries that document small discoveries and tricks from day-to-day engineering work. The tone is practical and research oriented, making the site a valuable resource for anyone interested in serious engineering and open data.
Overreacted.io is the personal blog of Dan Abramov, a software engineer best known for his work on React at Meta and as the creator of Redux. The blog explores ideas about JavaScript, React, functional programming, software design, and developer experience, often blending deep technical insight with personal reflection. Dan writes about topics like hooks, state management, debugging, performance, and the mental models behind React, helping readers understand not just how things work but why they were designed that way.
DanLuu.com is the personal blog of Dan Luu, known for long-form essays that mix systems thinking with careful measurement and clear writing. The topics range from computer latency and input lag, testing versus informal reasoning, and concurrency bugs, to industry pieces on developer compensation and curated lists of programming blogs worth reading. Many posts include data, historical context, and reproducible reasoning, which is why the site is often cited in courses and shared across the developer community. The design is intentionally minimal, which puts all attention on the ideas.
