Tech
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Jason Fantl
A computer science blog full of animated simulations and approachable open problems, from noisy-grid bit propagation to…
Jatijm
An in-browser text editor that generates static HTML files, with many ready-to-add components for building simple web pa…
Java, SQL and jOOQ
A long-running blog on Java and SQL best practices, with deep dives into query tricks, database quirks, and lessons lear…
Jeeliz FaceSwap
A WebGL demo that swaps your face with another one live through your webcam, with color correction to blend the result,…
Jeff Geerling
A prolific tinkerer's blog documenting Raspberry Pi cluster builds, homelab experiments, open source projects, and hardw…
Jelle Seegers
A maker who builds solar and human-powered machines, like a giant tracking magnifying glass that melts metal for casting…
Jellify
A bookmarklet toy that turns any website into wobbling jelly, so the elements of an ordinary page jiggle and bounce like…
Jellyfin
A free, open-source media server that lets people stream their own movie and music collections without ads or tracking,…
Jem's Field Notes
A personal blog kept for over 25 years, mixing family, fitness and running with webby resources, coding nerd-outs and th…
Jeremy's Antique Radios
Photos, articles and technical notes on the vintage radios a hobbyist has owned and restored, preserving the history of…
Jim's TrueType QR Code Font
A font that draws QR codes: type text and the glyph substitution rules render a scannable code, a clever typographic hac…
Jitbit's SQL Interview Questions
The exact SQL questions a software company asks developer candidates, with the schema and the answers, handy for practic…
Jitsi Meet
A free, open-source video conferencing tool that launches an encrypted meeting room instantly through a link, with no ac…
Joel on Software
Joel Spolsky's classic essays on software development, management, and startups, including the famous Joel Test for engi…
Joel's Homepage
Joel (joelchrono), a blogger from Mexico, posts near-daily about games he beats, books, origami, FOSS and weekly notes,…
Johan Halse
The tongue-in-cheek personal site of web developer Johan Halse, who describes himself as a feared duelist, renowned love…
John Gerace
A personal blog of irregular dispatches on software, creative writing, and the quiet disasters that come with making thi…
John Graham-Cumming
The personal blog of former Cloudflare CTO John Graham-Cumming, mixing programming history, cryptanalysis, and stories f…
Johnny Decimal
A simple numbering system for organizing files, notes and life, with an introduction, worked examples and a free downloa…
Jokes and Humour in the public Android API
A tour of the jokes, easter eggs and silly placeholder strings that Android engineers left in the platform's public API,…
Jonny Elwyn
A blog on post-production from film editor Jonny Elwyn, with tutorials, workflow tips, and tool roundups for editors and…
Joseph K. Horn's Home Page
A personal site online since 1995 with a poem of the week archive, essays on great poetry and a deep corner devoted to H…
Josh Beckman
A digital garden and personal site from software engineer Josh Beckman, collecting notes, essays, and tools he tends and…
Josh Thompson
A developer's public scratch pad of essays and notes on technology, society and economics, written mostly for himself an…
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