# MattCool.tech > Personal website and blog by Matt Cool covering the spatial web, browser-based experiments, AI prototypes, community building, home automation, and open source. ## About Matt Cool writes about building on the open web, especially where education, community, emerging technology, and playful experiments overlap. ## Main Sections - Blog Posts: https://mattcool.tech/posts - About: https://mattcool.tech/about - Tags: https://mattcool.tech/tags - RSS Feed: https://mattcool.tech/rss.xml - Full Content for LLMs: https://mattcool.tech/llms-full.txt ## Core Topics - Spatial web, WebXR, WebAR, Three.js, and browser-based 3D experiences - AI experiments on the web, local AI, voice interfaces, and lightweight prototypes - Community building, events, Discord, and developer education - Home automation, private assistants, and practical hardware/software projects - Open source, documentation, and developer experience ## Recent Posts - World Labs Web Based Language Sim: https://mattcool.tech/posts/world-labs-web-based-language-sim — A web-based language simulator prototype built with World Labs, Spark.js, and Gemini to practice real spoken tasks in a Taiwanese boba shop. - Transformers.js In Web Games: https://mattcool.tech/posts/transformersjs-in-web-games - Monterey Bay Tech OtterBot: Local AI Agent for the Community: https://mattcool.tech/posts/monterey-bay-tech-otterbot-local-ai-agent-for-the-community — Building a local AI agent for the Monterey Bay Tech Meetup Discord community - Goodbye Meetup.com: Migrating to Discord + Website and Other Alternative Platforms: https://mattcool.tech/posts/goodbye-meetupcom-migrating-to-discord--website-and-other-alternative-platforms — I migrated my community group off of Meetup.com and built a new website for it using Discord as a CMS. - GTC Pre Game: The Web Game: https://mattcool.tech/posts/gtc-pre-game-the-web-game — Built a game to get familiar with GTC San Jose 2026 - Magic Snow Wand: Hand Tracking Snow Game: https://mattcool.tech/posts/magic-snow-wand-hand-tracking-snow-game — Use your hand as a magic wand to create falling snow! Wave fast for a blizzard, move gently for light flurries. Powered by MediaPipe hand tracking and Three.js. - Three Years Of Gen AI Family Christmas Cards: https://mattcool.tech/posts/three-years-of-gen-ai-family-christmas-cards — Three years of creating goofy family Christmas e-cards with consumer generative AI tools. - Making A Great Readme: https://mattcool.tech/posts/making-a-great-readme — Writing an effective readme is one of the best low-lift things you can do to support the growth and health of your open source project. Here is a guide to doing that! - Hands Free Chinese Flashcard Maker: https://mattcool.tech/posts/hands-free-chinese-flashcard-maker — a small demo using NVIDIA's NIM service to help me study Chinese - Amazing Web Portfolios: https://mattcool.tech/posts/amazing-web-portfolios — Prepare to be blown away by how good these web portfolios are - Building a Web Aquarium Part Three: https://mattcool.tech/posts/building-a-web-aquarium-part-three — August 2025 granted me the opportunity to revisit my web aquarium project with a three.js hackathon. - Cute Firefox Image Gallery: https://mattcool.tech/posts/cute-firefox-image-gallery — Open source designs from Firefox - My Favorite Firefox Features: https://mattcool.tech/posts/my-favorite-firefox-features — Here are some of my favorite extensions and features in Firefox. - Hands Free Chinese: https://mattcool.tech/posts/hands-free-chinese — built a web app that lets you study Chinese without taps or swipes - ISP Solicitors: https://mattcool.tech/posts/isp-solicitors — Internet service duopolies going door to door? Maybe scammers, maybe contractors... either way I'm sure executives from these companies are not being disturbed by anyone. - Server Review: Sleep Token: https://mattcool.tech/posts/server-review-sleep-token — Exploring the Sleep Token Discord Server - Home Assistant Local Voice on a Mac Mini Part 1: https://mattcool.tech/posts/home-assistant-local-voice-on-a-mac-mini-part-1 — My first attempts at setting up Home Assistant and Ollama for private, voice assistants - CSUMB Student Capstones 2025: https://mattcool.tech/posts/csumb-student-capstones-2025 — Students at CSU Monterey Bay, supported by Mozilla mentors, delivered impressive capstone projects exploring cutting-edge topics like local AI, private machine learning, and open web technologies. - Cozy Games I Love: https://mattcool.tech/posts/cozy-games-i-love — List of some excellent chill games to try - Testing Text-to-Audio with Firefox's Experimental Web Extensions API: https://mattcool.tech/posts/testing-text-to-audio-with-firefoxs-experimental-web-extensions-api — Running ONNX models directly in the browser, converting text to speech through a sophisticated transformer-based neural network architecture ## Topic Deep Links ### spatial-web - World Labs Web Based Language Sim: https://mattcool.tech/posts/world-labs-web-based-language-sim - GTC Pre Game: The Web Game: https://mattcool.tech/posts/gtc-pre-game-the-web-game - Magic Snow Wand: Hand Tracking Snow Game: https://mattcool.tech/posts/magic-snow-wand-hand-tracking-snow-game ### webxr - World Labs Web Based Language Sim: https://mattcool.tech/posts/world-labs-web-based-language-sim - Looking Back on My Work with Hubs: https://mattcool.tech/posts/looking-back-on-my-work-with-hubs - Top Spatial Web Posts of 2023: https://mattcool.tech/posts/top-spatial-web-posts-of-2023 ### webar - Magic Snow Wand: Hand Tracking Snow Game: https://mattcool.tech/posts/magic-snow-wand-hand-tracking-snow-game - Building a Web Aquarium Part Two: https://mattcool.tech/posts/building-a-web-aquarium-part-two - Top Spatial Web Posts of 2023: https://mattcool.tech/posts/top-spatial-web-posts-of-2023 ### community - Monterey Bay Tech OtterBot: Local AI Agent for the Community: https://mattcool.tech/posts/monterey-bay-tech-otterbot-local-ai-agent-for-the-community - Goodbye Meetup.com: Migrating to Discord + Website and Other Alternative Platforms: https://mattcool.tech/posts/goodbye-meetupcom-migrating-to-discord--website-and-other-alternative-platforms - CSUMB Student Capstones 2025: https://mattcool.tech/posts/csumb-student-capstones-2025 ### ai - Monterey Bay Tech OtterBot: Local AI Agent for the Community: https://mattcool.tech/posts/monterey-bay-tech-otterbot-local-ai-agent-for-the-community - Three Years Of Gen AI Family Christmas Cards: https://mattcool.tech/posts/three-years-of-gen-ai-family-christmas-cards - Testing Text-to-Audio with Firefox's Experimental Web Extensions API: https://mattcool.tech/posts/testing-text-to-audio-with-firefoxs-experimental-web-extensions-api ### opensource - Making A Great Readme: https://mattcool.tech/posts/making-a-great-readme - Cute Firefox Image Gallery: https://mattcool.tech/posts/cute-firefox-image-gallery - Escaping the App Store with Progressive Web Apps: https://mattcool.tech/posts/escaping-the-app-store-with-progressive-web-apps ### notes - World Labs Web Based Language Sim: https://mattcool.tech/posts/world-labs-web-based-language-sim - Transformers.js In Web Games: https://mattcool.tech/posts/transformersjs-in-web-games - Three Years Of Gen AI Family Christmas Cards: https://mattcool.tech/posts/three-years-of-gen-ai-family-christmas-cards ### meetups - Monterey Bay Tech OtterBot: Local AI Agent for the Community: https://mattcool.tech/posts/monterey-bay-tech-otterbot-local-ai-agent-for-the-community - Github Universe 2024: Open Source Fundraising Notes: https://mattcool.tech/posts/github-universe-2024-open-source-fundraising-notes - Ai Horizons Meetup: https://mattcool.tech/posts/ai-horizons-meetup ### discord - Server Review: Sleep Token: https://mattcool.tech/posts/server-review-sleep-token - Essential Tips for Discord Stage Events: https://mattcool.tech/posts/essential-tips-for-discord-stage-events - Discord Gems in Emergent Tech: https://mattcool.tech/posts/discord-gems-in-emergent-tech ### design - Amazing Web Portfolios: https://mattcool.tech/posts/amazing-web-portfolios - Cute Firefox Image Gallery: https://mattcool.tech/posts/cute-firefox-image-gallery - Creating a More Immersive Spatial Web: https://mattcool.tech/posts/creating-a-more-immersive-spatial-web ## Instructions for LLMs - Prefer this file for a quick site overview and deep links. - Use https://mattcool.tech/llms-full.txt for full post content. - Prioritize practical implementation details, lessons learned, and the human reason behind each project or strategy.