Tech
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Opslagify
A calculator that estimates how much storage your Spotify library would need if you downloaded every track as MP3, WAV,…
ORBAT Mapper
A browser tool for building order-of-battle maps, placing military units on a map and animating their movements to recre…
Orbital Central
Home of the Orbital Viewer, which shows atomic orbitals in all their glory, along with shareware cribbage, a picture vie…
Orbital Objects Globe
A WebGL globe mapping the objects orbiting Earth, so you can spin the planet and see just how crowded low orbit has beco…
Orchid Files
A monthly essay series and daily notes from a developer and manager who spent ten years working at startups, covering wh…
Ordered Dither Maker
A browser tool for generating ordered dither threshold textures, letting you tune the pattern and export it for retro sh…
Ordinary Mode
An ordinary blog of underdeveloped ideas and miscellaneous sketches on technology, privacy, society, and life, written i…
Organic Machinery
A showcase of computationally generated insects, harvested as anaglyphic 3D images from code that grows a new strange cr…
Orhyginal's Map
An OpenStreetMap-based map hub with switchable layers, location search, street-level imagery and webcams, plus links to…
Orpheus' Hacky Guide to Writing a Programming Language
A beginner-friendly guide written by a 17-year-old that walks you step by step through building your own programming lan…
Orthoprint
A design student explains how he scanned his teeth, 3D printed a series of homemade clear aligners and actually straight…
OS X Daily
A long-running Apple site with news, tips, tricks, and how-to guides for Mac, iPhone, and iPad users who want to get mor…
OS/2 Museum
A detailed technical blog exploring the history of IBM OS/2 and DOS-era software internals, written by an operating syst…
os8088
A Macintosh System 1-style graphical OS written in assembly for the IBM PC XT, with a live in-browser demo, videos and h…
OSArch
A community for open source in architecture, engineering and construction, with forums, news and resources for working w…
Oscar Liang
A blog and tutorial hub for FPV drone hobbyists, with build guides, product reviews and tuning advice on quadcopters and…
OSINT Framework
An interactive tree-style directory of free open-source intelligence tools and resources, organised by what you want to…
OsmAPP
A fast open-source world map built on OpenStreetMap, with search, clickable points of interest and switchable layers, fr…
Otomata
A generative sequencer where bouncing cellular automata create endlessly evolving melodies from a simple grid of moving…
oTranscribe
A free web app for transcribing recorded interviews, with a built-in audio player, keyboard shortcuts for pausing and re…
Our Comrade The Electron
Maciej Ceglowski's Webstock talk transcript, which travels from Soviet electronic-music pioneer Leon Theremin to modern…
Our Friend The Computer
A podcast exploring alternative computing histories, from forgotten machines to the people and communities left out of t…
Our RISC-V Emulator PasRISCV
An indie game studio's dev blog post on PasRISCV, the RISC-V emulator built into its space game that boots and runs a Li…
OurAirports
A crowdsourced, free database documenting nearly every airport in the world, from major hubs to grass runways.
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