Tech
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27 Years Later the Psion 3a Is Still Wonderful
A fond look at the Psion 3a pocket computer rediscovered in a cupboard, still working after 27 years, and why its keyboa…
2D Coulomb Gas Simulator
A WebGPU simulator of a two-dimensional Coulomb gas, where charged particles repel one another and settle into patterns…
2D Vehicles
Pat Kerr tells how a weekend 1996 physics prototype in GFA BASIC became the vehicle system of Grand Theft Auto, with the…
2in1 Oscilloscope
An online oscilloscope with built-in waveform generators, so you can synthesize signals and watch their traces right in…
30 Papers
A curated reading list of 30 foundational AI and deep learning papers, hosted in full with plain-language explanations s…
33 Line React
A programming essay showing how a React-like library can fit in 33 lines of code, as a way to understand how components…
35mmc
A community-driven blog about film photography and compact cameras, publishing reviews, guides, and personal essays from…
37signals Dev
The engineering blog from the team behind Basecamp and HEY, with write-ups on how they build, deploy, and run their web…
3D Bin Packing Algorithm Visualized
A 3D visualization of a bin packing algorithm that shows boxes being arranged into containers, making a classic logistic…
3D Game Shaders For Beginners
A step-by-step online guide to real-time shading techniques such as lighting, shadows, normal maps, ambient occlusion, r…
3D House Planner
A free floor planner in the browser for designing houses and apartments, letting you lay out rooms and view your plan in…
3D Packing for 3D Printing
A write-up on a program that packs many 3D models into the smallest possible volume for 3D printing, with images of the…
3D Printing Giant Things With a Python Jigsaw Generator
A maker's write-up on generating giant jigsaw puzzles with a Python script and 3D printing the pieces, with the code and…
3D Programming Weekly
An archive of weekly 3D programming articles covering shaders, graphics math, and rendering techniques, a deep reference…
3D Raycasting Engine
A tiny first-person 3D maze rendered live with a JavaScript raycasting engine in the style of early 90s shooters; walk a…
3D Retro Graphics
A free CC0 library of retro 3D effects you can paste into a web page, including plasma, starfield, raytracer, globe and…
3D Textures
A library of free seamless PBR textures and materials for Blender, Unreal, Unity, and Godot, with previews to browse and…
3D Typewriter Parts
A library of 3D-printable files for replacing broken or missing parts on vintage typewriters, aimed at hobbyists restori…
3dasd
An open-source DIY room-scale 3D scanner project, with documentation covering how the build works and how to make your o…
3DC.io
A minimal cross-platform 3D design tool that runs in the browser, built to make putting together and arranging simple 3D…
3dicons
An open-source library of over 1,400 handcrafted 3D icons, free to use without attribution in personal or commercial pro…
3n3a
A personal portfolio of small browser toys and utilities, including a MacOS-style calculator, calming images, an emoji c…
3v4l
An online shell that runs your PHP snippet against more than 500 PHP versions and compares the output, showing exactly w…
4 Billion If Statements
A tongue-in-cheek post exploring a viral screenshot of absurd code and asking how many if statements it would take to ch…
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