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Alternatives

Products that do what I saw this mind-blowing experiment, so I made a simple version of it does

Two browser windows (acting as socket clients) communicate their: - Screen dimensions - (screen.width, screen.height) - Window dimensions - (window.innerWidth, window.innerHeight) - Window X/Y position - (window.screenX, window.screenY) ...or whichever calculation works best for you. The original work by Bjorn Staal https://twitter.com/_nonfigurativ_/status/172732259457002734 used localStorage, but I found sockets more fun, because if tweaked a bit, this can be shared with friends. Here's a demo of how it works and the codebase:…

  1. 1

    A tool for designers to measure screen dimensions

    2019

  2. 2

    Measure the web

    2024

  3. 3

    Measure the web

    2024

  4. 4

    Manage your window positions and size from your keyboard

    2014

  5. 5

    The go-to ruler for designers and developers

    May 2026 · chromewebstore.google.com

  6. 6AT

    Hi HN! I read[1] about Janet[2] some time ago, then immediately got impressed by the enthusiasm of its community, and by the language itself, so I started playing with it. At the time I was searching for a tiling window manager for Windows, and unavoidably the idea of scratching my own itch with Janet got hold of me, so Jwno was born. Simply put, Jwno is a keyboard-driven tiling window manager for Windows, scriptable with Janet. But since it has a complete Lisp runtime, and a thin wrapper library for Win32 APIs[3], you can certainly do much more with it. I hope you'll enjoy playing with it…

    2025 · agent-kilo.github.io

  7. 7

    Screen Specifications of popular mobile devices & monitors.

    2014

  8. 8IW

    https://lisagui.com/info.html This is a web OS I wrote in vanilla JS that looks like the Apple Lisa Office System (1983-85), with other contemporaneous influences and additional improvements and features. It's currently in alpha and isn't remotely bug free. I had been holding off on posting this here until it was somewhat presentable and useful. Please note; the Lisa conforms more literally to the desktop metaphor than most modern GUIs - some of the important differences are mentioned in the readme. This is a complete recreation of the UI in JS; it all renders to a single…

    2025 · alpha.lisagui.com

  9. 9
    Responder234

    Displays the websites grid and the width/height when resized

    2017

  10. 10

    Show the browser sizes your actual visitors use. By Polypane

    2020

  11. 11
    ZoneShare112

    Perfect screen sharing for ultrawide monitors | macos app

    Dec 2025

  12. 12

    An interactive map of screen sizes for responsive web design

    2019

  13. 13
    Glaze141

    Watch videos while you work

    2020

  14. 14

    A Chrome extension to measure anything

    2014

  15. 15

    Chrome Extension for designers to test responsive websites.

    2014

  16. 16

    Mirror part of your screen to a window for precise control

    2025

  17. 17WC

    There is a large grid of 250x250 tiles, on which you are be able to create a tiny website, contained into the tile. You can basically consider the tile as a mini version of your website, showcasing what your full site has (but it can be anything). You are able to link to your full site, and use any HTML/CSS/JS inside. The purpose is to create beautiful and interesting tiles, that could be used for exploring the indie-web in an easy and interesting way.

    Jan 2026 · webtiles.kicya.net

  18. 18

    A in-browser screen recorder featuring cinematic 3D effects

    Jan 2026

  19. 19

    The first mobile browser made for power users.

    2019

  20. 20

    Instantly calculate any aspect ratio.

    2021

  21. 21

    Your window tiling command center for macOS

    2025

  22. 22

    Animated 8-bit browser home screens

    2015

  23. 23

    An interactive visualization of the universe

    2019

  24. 24
    Measure99

    Measure typographic line lengths right from the page

    2017

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