Tech
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Ratatype
A touch typing tutor with lessons, practice, and a keyboarding speed test, plus a free certificate once you reach a qual…
Raven Kwok
Portfolio of an artist creating generative installations and applications, including Staircase, a cellular-automata piec…
Raverie Engine
A Unity-like game editor that runs entirely in the browser through WebAssembly, so you can build and test games without…
RAWGraphs
A free, open-source tool for turning spreadsheet data into custom interactive charts without writing code, with a galler…
RAWGraphs
A free browser app that turns pasted spreadsheet data into unusual vector charts such as alluvial diagrams, beeswarms, s…
Ray Marching and Signed Distance Functions
An introduction to ray marching and signed distance functions, the technique behind many demoscene effects, explained st…
Ray Marching: Menger Sponge Breakdown
A step-by-step explainer on ray marching, showing how an iterated Menger sponge fractal gets rendered by marching rays t…
Ray Tracing in Notepad.exe at 30 FPS
A game graphics programmer explains how he hacked Windows Notepad into a display surface and ran a real-time ray tracer…
Ray Tracing in One Weekend
A free, public-domain book series that walks you step by step through writing your own ray tracer, from first gradient i…
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Raymarching Distance Fields
An illustrated walkthrough of raymarching with signed distance fields, explaining how those smooth glowing 3D shader sce…
Raymond Camden
A long-running developer blog by Raymond Camden covering web development, JavaScript, serverless, and AI, with practical…
R-bloggers
A blog aggregator collecting news and tutorials from hundreds of R bloggers, a steady feed of data science and statistic…
RC Universe
A broad radio-control hobby community covering planes, cars, boats, and helicopters with forums, reviews, and event list…
RC-455
A retro-styled synthesizer in the browser with three oscillators, filters, distortion, reverb, an arpeggiator and even a…
RCATheremin.com
A deep archive of the instruments Leon Theremin designed and built, with a registry and map of surviving 1929 RCA therem…
RCCrawler
A radio-control forum focused on crawlers and off-road RC vehicles, with build threads, reviews, and technical troublesh…
RCGroups
The largest radio-control hobby forum, covering scratch-built planes, drones, and cars with build logs and troubleshooti…
Reactor Atlas
An interactive world map of nuclear power plants covering every reactor since 1954, with technical sheets, 3D plant mode…
Read a QR by Hand
An interactive walkthrough that teaches you to decode a QR code manually, step by step, with nothing but your own eyes a…
Read Rare
A library of internal memos, leaked handbooks, and forgotten books from people who built Apple, Intel, Google, and Faceb…
Reading QR Codes Without a Computer
An interactive explainer that teaches you to decode a QR code by hand, step by step, showing masks, format bits and erro…
ReadKinetic
A free, local-first speed reader that flashes text one word at a time, letting you import an EPUB or PDF or paste text a…
Readwok
A text reader that breaks any long text into paragraphs shown one at a time, helping you read carefully and take in a bo…
Real Gaming Router
A tinkerer's write-up on getting GTA: Vice City to run on a TP-Link wireless router, from reverse-engineering the hardwa…
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