Tech
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OpenAI.fm
An interactive playground for text-to-speech voices where you pick a voice, tone and vibe, type anything, and hear it re…
OpenAI's Mission Statement, Start to Finish
A timeline of OpenAI's mission statement as it changed over the years, highlighting the edits that made the company's st…
OpenArena Live
Play Quake 3 style arena deathmatch in the browser with friends using WebAssembly and WebRTC, with no download needed. P…
OpenBooks
A retro-styled portal to the open web made by people rather than algorithms, with a search, directory, cool links, a man…
OpenBSD
The home of OpenBSD, a security-focused Unix-like operating system known for its clean code, strict licensing, and disti…
OpenCorporates
The largest open database of companies in the world, searchable by name or jurisdiction to look up registrations, office…
OpenFlights
A free open-source tool for logging, mapping, and sharing your flights, with trip stats and a map of routes between airp…
OpenGL 4 Shaders
A short, clear introduction to OpenGL shaders from Anton's OpenGL 4 tutorials, covering vertex and fragment shaders and…
OpenGL Tutorial
Free step-by-step tutorials for modern OpenGL 3.3 and later in C and C++, from the first triangle to lighting, textures…
OpenGLBook
A free OpenGL programming tutorial in online book format, walking through the fundamentals of graphics programming one c…
OpenLair XP
A web-based Windows XP simulator with an authentic desktop, start menu and apps you can use in the browser, for a hit of…
OpenMHz
A free web player for radio scanner feeds, with recent public safety dispatch calls from many U.S. systems that you can…
OpenOrb
A curated search engine for Atom and RSS feeds that helps you discover independent blogs and sites worth following, inst…
OpenProcessing - Creative Coding Community
A community platform for creating, sharing, and exploring interactive sketches made with Processing and p5.js.
OpenRailwayMap
An OpenStreetMap-based world map of railway infrastructure, showing tracks, signals, speed limits, and electrification f…
OpenResume
A free open-source resume builder that lets you fill in your details, watch a clean professional layout update live, and…
OpenSCAD Configurable Calendar
A write-up of a parametric calendar built in OpenSCAD, with options to configure the year, layout, and sizes for printin…
openScope
A free air traffic control simulator that runs in the browser, where you guide arriving and departing aircraft safely us…
Opensource.com
A community publication with articles, tutorials, and stories about open source software, hardware, and culture from dev…
OpenStreetMap
A free, editable map of the world built and maintained by a global community of volunteer mappers.
OpenTTD in the Browser
The open-source transport tycoon game OpenTTD compiled to WebAssembly, so you can build railways, roads and shipping net…
OpenVim
An interactive tutorial that teaches the Vim text editor right in the browser, guiding you key by key with a virtual key…
Operation Luigi
A fun first-person tale of how one hacker, with her friend's blessing, quietly took over her computer using only pranks…
Ops-Class
Hack the kernel: a free online operating systems course from SUNY Buffalo with videos and assignments where students com…
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