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Life & fun · alternatives · 2026

24 alternatives to Browse HN Together in Three.js

Hey HN, We’re Philip, Amby, and Declan, and we made “multiplayer virtual computers” that you can embed anywhere, including 3D spaces. We decided to build this because we noticed that embedding third-party apps and websites can be a nightmare due to incompatible platforms, security issues, and poor UX. Adding multiplayer functionality to these embeds makes this problem exponentially more difficult. On the backend, we’re spinning up a VM and running a resource-optimized fork of Chromium which we then stream to participants via WebRTC. Since we’re hosting the servers running the applications,…

Browse HN Together in Three.js is a multiplayer virtual computer that can be embedded in websites and 3D spaces. It runs a resource-optimized browser on a backend server and streams it to multiple users via WebRTC… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Browse HN Together in Three.js launched in 2022; newer entries below may have overtaken it.

  1. 1

    I wasn't quite sure if this qualified as "Show HN" given you can't really download it and try it out. However, dang said[0]: > If it's hardware or something that's not so easy to try out over the internet, find a different way to show how it actually works—a video, for example, or a detailed post with photos. Hopefully I did that? Additionally, I've put code and a detailed guide for the netboot computer management setup on GitHub: https://github.com/kentonv/lanparty Anyway, if this shouldn't have been Show HN, I apologize! [0]…

    2024 · lanparty.house · its alternatives →

  2. 2

    Multiplayer embeds of any website

    2022 · its alternatives →

  3. 3
    floors.js▲215

    Hey HN, I'm Vincent. I built floors.js to bring back social interactions on the web. You paste one script tag. Your pages become isometric 3D rooms. Visitors show up as avatars, see each other, and chat in real-time. Three.js handles the isometric rendering, and a Bun WebSocket server manages presence, rooms and chat. The whole thing runs without touching the host site's DOM or styles beyond its own container. It works on any static site and is also optimised for SPA navigation (clicking on a door lets you navigate to another page). The landing page itself is the live demo, and I'm in the…

    Feb 2026 · floorsjs.com · its alternatives →

  4. 4
    thirdweb▲897

    Build web3 apps and games, easily

    2021 · thirdweb.com · its alternatives →

  5. 5
    Hyper 3▲643

    A cross-platform terminal powered by web technologies

    2019 · hyper.is · its alternatives →

  6. 6

    Hi HN! Thanks for your attention to my post. It was a big challenge to run most of Node.js packages in browser, fast moreover. Virtual File system, resolve import/export. I got cold many times, depressions, burned out, yet still alive and finished it. Many guys helped me with an advice. Many users give a lot of positive feedback. There are 200,000 monthly unique users. I work full time now because of the freemium business model. To be honest - I am happy after many years of hard work.

    2022 · playcode.io · its alternatives →

  7. 73M

    2019 · urk-3d-multi-space-game.herokuapp.com · its alternatives →

  8. 8SM
  9. 9
    Layer▲175

    Making your browser multiplayer

    2023 · layer.app · its alternatives →

  10. 10IB

    I've been working on an MMORPG that is now in alpha as a solo developer. Here are the major open source technologies that I use: Blender - 3D modeling software for creating the overall environment and every game object. I've gotten a lot of CC and Public Domain assets from https://poly.pizza GLTF - I export assets from blender to the GLTF asset format JSON - I write a JSON config for every game object that describes things like its name, its interactions, its collisions, etc. Node.js exporter - I iterate over the environment and every asset to create a scene hierarchy. I use…

    2024 · alpha.reconquer.online · its alternatives →

  11. 11AC

    Hello HN. This is a project me and some friends built at university in 2017. It was originally built in a rush, but we've added a few improvements over the years. It's a fun game to host at a demoparty and project on a big screen - We did that at Instanssi many times. The implementation is still rough, and suffers from the fast pace of the modern web - The frontend is likely very outdated, and the backend is built with Vapor 2 and Swift 3.1, both no longer supported. You can host this yourself, but it might be a bit of a pain to set up. The WebSocket protocol is fairly trivial to work out…

    2022 · pixel.vkoskiv.com · its alternatives →

  12. 12

    I open sourced my HTML5 multiplayer 3D voxel browser game engine.

    2023 · kevzettler.com · its alternatives →

  13. 13

    Meet, share and collaborate in private 3D virtual spaces

    2022 · support.mozilla.org · its alternatives →

  14. 14

    I got my start on the Internet in the very early 90s playing with, authoring in, and programming on LambdaMOO (https://en.wikipedia.org/wiki/LambdaMOO) and similar systems. Shared virtual social spaces, with a persistent object oriented authoring / scripting language. They can be classified as MUDs (depending on who you talk to) but the focus is social, creative / authoring, and shared programming not RPG gaming. I've always wanted to see this kind of thing modernized and further developed. Over the last 25 years or so I've worked on similar but novel & improved…

    2023 · github.com · its alternatives →

  15. 15

    Add web co-browsing to your app

    2022 · its alternatives →

  16. 16

    Still very much a work in progress, but really wanted to share this even in it's early state. Had heaps of fun building it to learn more about WebRTC.

    2023 · github.com · its alternatives →

  17. 17

    Create a free virtual HQ in a few seconds.

    2021 · spot.xyz · its alternatives →

  18. 18

    I've always been curious about real-time multiplayer user interfaces. When I found out about CRDTs and Yjs[1] I thought they could serve as a solid base for a project like that. So I built this pretty simple desktop-like UI (heavily inspired by lifeat.io) and used Yjs to replicate the whole UI state among multiple peers, creating the experience of a unique interface. Try online: https://yboard.lol [1]: https://github.com/yjs/yjs

    2022 · github.com · its alternatives →

  19. 19SO
  20. 20

    Earlier this year, we released our open-source game engine [0] built with Rust, WebAssembly, and WebGPU. Today, we’re happy to announce the Ambient platform, which brings web deployment, server hosting, and more to the runtime. With Ambient, you can make a game, deploy it to the browser in one command, share your URL and instantly play with others, no downloads or installs needed. Our WASM use is innovative; it is being used as both a sandboxed runtime for user code, and as a way to run the entire Ambient runtime in the browser. This, paired with our ECS data model, enables a highly modular…

    2023 · ambient.run · its alternatives →

  21. 21

    Node library for empowering real-time applications at scale - team-emt/razorframe

    2016 · github.com · its alternatives →

  22. 22

    Hi all, We just launched the first public tech preview of Third Room: an open source, standards-based, decentralised vision of interoperable virtual worlds for the open Web, built entirely on Matrix - without cryptocurrencies, NFTs or walled gardens. It's built on an new opensource game engine for the web called Manifold, which provides a solid 60fps of fullscreen 3D thanks to multithreading across webworkers using SharedArrayBuffers and Atomics, using Three.js for rendering, bitECS as an entity component system, Rapier for physics and Hydrogen for Matrix chat+networking. It requires no…

    2022 · thirdroom.io · its alternatives →

  23. 23

    Not really an oprating system, Just a pile of javascript pretending to be a Desktop Environment - Lerc/notanos

    2013 · github.com · its alternatives →

  24. 24

    A web framework for building multi-user virtual reality experiences. - networked-aframe/networked-aframe

    2017 · github.com · its alternatives →

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Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →