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Web infrastructure engineer and standards editor; chaired the IETF HTTP working group and co-authored core HTTP and Atom specifications.

• rfc-refs — References between RFCs in JSON format

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Co-creator of Django and creator of Datasette; writes daily at simonwillison.net.

• pypi-datasette-packages — Archive PyPI JSON information for all Datasette related packages

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Computer science professor who works on fast data processing; co-author of the simdjson parser and a weekly blogger about software performance since 2004.

• Faster JSON parsing with SVE2 on ARM processors

  ARM processors, like those in your phone, have instructions capable of processing several elements at once (SIMD). These instructions are called NEON. But many newer processors have a different SIMD extension called SVE…

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Engineer at Vercel Labs as of 2026. Ships a steady stream of small developer tools — agent-browser, portless, json-render, native-sdk, the v0 SDK — and lists every one of them at ctate.dev.

• New experiment: json-render + jev The future Generative UI is instant Your components, your actions, your design system Rendered in milliseconds

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Engineer at Vercel Labs as of 2026. Ships a steady stream of small developer tools — agent-browser, portless, json-render, native-sdk, the v0 SDK — and lists every one of them at ctate.dev.

• Introducing Vercel Labs Tools for devs in the AI era agent-browser, skills, json-render, deepsec, fx, just-bash, portless, vgpu and more We experiment in public: ship early, learn from feedback, and keep working on what people find useful We've been shipping under the Labs name for a while. Now, Labs is an official team at Vercel focused on exploring new capabilities and primitives that change what developers and agents can do. Here's what to expect: → Labs products: maintained, supported, built to be relied on → Active experiments: moves fast, expect rough edges and breaking changes → Past e…

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Creator of Claude Code at Anthropic.

• json-schema-to-typescript — Compile JSON Schema to TypeScript type declarations

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Software engineer and engineering leader at Canonical, working on Ubuntu; writes about his homelab, Nix and tooling at jnsgr.uk.

• releasegen — Generates a JSON report about Github and Launchpad releases for specified teams

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Computer science professor who works on fast data processing; co-author of the simdjson parser and a weekly blogger about software performance since 2004.

• The new Go JSON API: twice as fast, or 1.5x slower?

  JSON is a standard format for data interchange. It is effectively a tiny subset of JavaScript made of objects and arrays. It looks as follows {"key":1, "text":[1.0,2.0]}. Many programming languages include a JSON librar…

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Software engineer who writes about low-level and systems programming at nullprogram.com; author of the Elfeed feed reader, the Endlessh SSH tarpit and Enchive.

• pdjson — C JSON parser library that doesn't suck

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Programmer on the Dart language at Google and author of Game Programming Patterns and Crafting Interpreters; previously a game developer at EA.

• It is the year 2040. After the AI Wars of the 2030s, only two programming languages remain: JSON and Markdown.

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Moroccan senior frontend developer writing at smakosh.com; builds side projects and client work under Smakosh LLC.

• yc-blacklist — Open, community-maintained registry of YC startups to avoid — don't work for, don't use, don't pay for. JSON database, contribute via PR.

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Writer and consultant on formal methods and software correctness; author of Practical TLA+ and Logic for Programmers.

• Nontrailing separators do not spark joy

  This is valid JSON: { "a": 1, "b": 2, "c": 3 } This is invalid JSON: { "a": 1, "b": 2, "c": 3, } The difference is the last comma. The JSON grammar specifies that a comma can separate two members of an object but not po…

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Canadian full-stack web developer who makes JavaScript and CSS video courses and co-hosts the Syntax podcast.

• JSON-Alexander — A really good JSON viewer browser Extension

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London-based front-end architect, web developer evangelist and cloud consultant; Microsoft MVP. Writes at praveen.science and answers on Stack Overflow.

• Just awesome! 🤩 20 years later and meeting Douglas Crockford, the creator of JSON again! ❤️‍🔥 #JSON #Achievement #Grateful #Career

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Software engineer who writes about low-level and systems programming at nullprogram.com; author of the Elfeed feed reader, the Endlessh SSH tarpit and Enchive.

• dcmake: a new CMake debugger UI

  CMake has a --debugger mode since 3.27 (July 2023), allowing software to manipulate it interactively through the Debugger Adaptor Protocol (DAP), an HTTP-like protocol passing JSON messages. Debugger front-ends can star…

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Austrian developer. Created the libGDX game framework, and more recently the pi coding agent, which moved with them to Earendil — Armin Ronacher's company — in April 2026. Writes at mariozechner.at.

• Prompts are code, .json/.md files are state

  Treating LLMs as shitty general purpose computers we program with natural language. Because throwing shit at the wall wasn't working anymore.

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Founder of OpenStreetMap, the collaborative map of the world; later worked on mapping at Microsoft and Telenav.

• I've been avoiding looking at MCP because it just smelled wrong. And yes, it's just XML-RPC but it's JSON. It smells like... SUN SPARCStation and 1999.

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Writer and web developer; founding editor of Lifehacker, co-creator of ThinkUp and of the todo.txt format.

• json2md — ⚙️ Convert JSON data to Markdown.

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Creator of Claude Code at Anthropic.

• json-schema-to-typescript-browser — Browser demo for json-schema-to-typescript

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Software engineer; co-founder and former CTO of Tailscale, previously on the Go team at Google.

• jsonfile — Persist a Go object to a JSON file

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British software developer at Laravel and creator of the Cachet open-source status page system. Podcaster; writes at james.brooks.page.

• JSON-Airports — A JSON array of Airport names, IATA code and location

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Programmer and writer; specified JSON, wrote JavaScript: The Good Parts, JSLint and How JavaScript Works.

• JSON-js — JSON in JavaScript

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British senior engineering manager at Netlify, previously a team lead at the BBC; writes about JavaScript testing, chatbots and serverless at marclittlemore.com.

• messenger-json-schema — JSON schema for Messenger messages

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Indian software engineer working on Android and React; writes about his setup and side projects at ishubhamsingh.dev.

• AEXPapers_json

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Swedish software developer writing about tooling, working from home and running a software business at seastone.io.

• jsonapi — Utilities for working with JSON API

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Software developer; created Firebug, helped create Firefox on the Netscape browser team, and built the original Facebook iPhone app.

• ajax — Utilities for loading JSON and XML in the browser.

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