Work · alternatives · 2026

Keeplay is a web application created as a final project for Carnegie Mellon University's webapps course. It was launched in December 2011. The project was developed collaboratively and is available at… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. A friend and my CMU Webapps final project launched in 2011; newer entries below may have overtaken it.

1. 1GJ
   GoldenLayout – JavaScript Layout Manager▲211

   GoldenLayout- a multi-window javascript layout manager for webapps

   2014 · golden-layout.com · its alternatives →

2. 2
   Layouts.dev▲699

   A notebook for building interfaces with Tailwind & shadcn/UI

   2024 · layouts.dev · its alternatives →

3. 3
   YoinkUI▲340

   Copy any webpage's UI with 1 click

   2025 · yoinkui.com · its alternatives →

4. 4
   OpenUI▲543

   Describe UI and see it rendered live

   2024 · github.com · its alternatives →

5. 5
   Copy UI▲382

   Your shortcut to stunning web design

   2023 · copyui.com · its alternatives →

6. 6
   Keep React▲256

   React-powered web solutions with open-source UI components

   2023 · bestsellers-ai.com · its alternatives →

7. 7
   Layer▲290

   The connective tissue for spreadsheets

   2022 · golayer.io · its alternatives →

8. 8
   Meeet▲293

   Find Devs and Designers for Side Projects

   2014 · its alternatives →

9. 9IM
   I made a Web-based Todo App - used: CSS3 3D transforms, Node.js, love▲237

   The Todo App for Procrastinators ;)

   2011 · tomorrow.do · its alternatives →

10. 10
    Claude Artifacts but creating real web apps▲189

    Hey Hacker News! Launching gptengineer.app into beta today. It's like Claude Artifacts, but: - you can edit the code in your fav IDE (two-way github sync) - installs npm packages - automatically picks up build and runtime errors and fixes them - very fast, built with rust The full stack capabilities are built on supabase (prefer to not have to handle auth + user data at this point so this is owned by the user) The seed for this project was an open source experiment, posted about that previously here: https://news.ycombinator.com/item?id=36422730 Would love feedback if you give…

    2024 · gptengineer.app · its alternatives →

11. 11MF
    (my first webapp) An HTML5 platform game stage design community▲61

    2012 · taketheblock.com · its alternatives →

12. 12
    Keep Design System▲130

    Create beautiful and consistence user interface with ease

    2023 · keepdesign.io · its alternatives →

13. 13WC
    WebTiles – create a tiny 250x250 website with neighbors around you▲230

    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 · its alternatives →

14. 14LA
    LayerJS – A simple UI composition and navigation library▲176

    2018 · layerjs.org · its alternatives →

15. 15
    Codewich – A live-updating TypeScript/CSS/HTML playground▲114

    Create and share simple web demos using TypeScript, CSS, and HTML. Prototype new ideas quickly.

    2017 · codewich.com · its alternatives →

16. 16
    Mustard UI▲114

    A CSS framework that actually looks good.

    2018 · mustard-ui.com · its alternatives →

17. 17
    Grid Overlay Pro▲106

    A browser extension to visualize grid layouts on any webpage

    Feb 2026 · chromewebstore.google.com · its alternatives →

18. 18
    Layer▲175

    Making your browser multiplayer

    2023 · layer.app · its alternatives →

19. 19
    CodeTogether▲97

    Code live together without sharing your screen

    2025 · its alternatives →

20. 20
    Breadboard – A modern HyperCard for building web apps on the canvas▲93

    Hey HN! I’m Simone. We re-built Breadboard, a visual app builder that mixes Figma-style UI design with Shortcuts-style logic so you can build, preview, and publish interactive web apps directly from the canvas. What it does Design UIs visually with a flexible canvas –like Figma–. Define app logic with a visual, instruction-stacked editor inspired by Shortcuts. Live preview apps directly on the canvas –no separate preview window–. Publish working web apps with one click. Why we made it Modernize the HyperCard idea: combine layout, behavior, and instant sharing in one place. Reduce friction…

    Feb 2026 · breadboards.io · its alternatives →

21. 21
    Tilepieces – An open source project for visually editing HTML documents▲123

    Hi all, My name is Simone Di Nuovo and i'm the creator of tilepieces, an open source project to visually editing HTML documents and Web applications. Tilepieces is a software that allows you to create applications for editing HTML documents, using some of the popular interfaces of the browser developer tools (with which it is possible to integrate css edits). Tilepieces also allows you to reuse your favorite code and libraries, and exposes APIs that are useful for editing multiple files at a time. You can start using tilepieces with its progressive web application version at…

    2022 · tilepieces.net · its alternatives →

22. 22
    Scape▲66

    Collaborative presentation software for data driven teams

    2022 · its alternatives →

23. 23
    Mosaic – A declarative, front-end JavaScript library for building UIs▲63

    🎨 A front-end JavaScript library for building user interfaces! - Authman2/Mosaic

    2019 · github.com · its alternatives →

24. 24IC
    Instant CMS as a Service on any element (with contenteditable)▲113

    2012 · copybar.io · its alternatives →

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 →