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Dev tools · alternatives · 2026

24 alternatives to Mysterious bug in the HTML spec

Scrimba is the fast way of learning to code! Our interactive courses and tutorials will teach you React, Vue, Angular, Web Development, Node.JS, JavaScript, HTML, CSS, and more.

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Mysterious bug in the HTML spec launched in 2017; newer entries below may have overtaken it.

  1. 1NJ

    Hey HN, I'm Sindre, CTO of Scrimba (YC S20). We originally launched Scrimba to make video learning more interactive for aspiring frontend developers. So instead of passively watching videos, you can jump in an experiment with the code directly inside the video player. Since launch, almost two million people have used Scrimba to grow their skills. However, one limitation is that we've only supported frontend code, as our interactive videos run in the browser, whereas most of our learners want to go fullstack—building APIs, handling auth, working with databases, and so forth. To fix this, we…

    2025 · its alternatives →

  2. 2

    Helping devs learn by merging the IDE and video into one

    2025 · scrimba.com · its alternatives →

  3. 3II

    Hey all My name is Sindre, and I am the CTO of Scrimba (YC S20). For the last 7 years, I have written all my web apps in a full-stack programming language called Imba. It compiles to JavaScript and its main goal is to make web developers more productive. I just launched a major overhaul of Imba, so I wanted to share it here on HN, in case anyone are interested in learning more about it. It is very opinionated, so some of you might not like it, but I would love to hear anyones feedback regardless. Constructive criticism appreciated! The backstory: Imba initially started in 2012 as an effort…

    2021 · its alternatives →

  4. 4

    Ask any question, get a video back instantly

    Aug 2026 · scrimba.com · its alternatives →

  5. 5
    JSRobot▲477

    Learn to code in JavaScript by playing a game 🤖

    2017 · lab.reaal.me · its alternatives →

  6. 6

    A collection of CSS effects with a click to copy.

    2019 · emilkowalski.github.io · its alternatives →

  7. 7

    Application that will help you learn React fundamentals. Install this application locally - there's tutorial, code snippets and exercises. The main objective of this project is to help you get off the ground with React! - tyroprogrammer/learn-react-app

    2019 · github.com · its alternatives →

  8. 8
    WeWeb▲537

    Create websites faster with a next-generation visual builder

    2021 · weweb.io · its alternatives →

  9. 9SI

    Dash is a fun and free online course from General Assembly that teaches you how to program with the basics of web development through projects you can do right in your browser. Get started today!

    2012 · scratchpad.io · its alternatives →

  10. 10

    Curated list of free online programming courses

    2017 · coursesity.com · its alternatives →

  11. 11

    Visual explanations of web development topics

    2018 · codeanalogies.com · its alternatives →

  12. 12

    Learn HTML, JS, CSS & Node.js w/ free videos & live code

    2018 · blog.glitch.com · its alternatives →

  13. 13

    Short code snippets for all your development needs

    2020 · 30secondsofcode.org · its alternatives →

  14. 14

    JS snippets that you can understand in 30 seconds or less.

    2018 · github.com · its alternatives →

  15. 15

    Today I launched an Imba course for Scrimba.com. Imba is an amazing language for building web applications, that deserves more attention. Watch my announcement video: https://www.youtube.com/watch?v=CDSIsvZJhow Take the course (it's free): https://www.scrimba.com/learn/imba Some context: I fell in love with the Imba programming language a couple years ago and quit my job to spend all my time building projects with Imba. The first one being TaskTXT (https://www.tasktxt.com), a plaintext notepad with built-in timers. It's full of UI details that…

    2022 · scrimba.com · its alternatives →

  16. 16

    Develop web apps in React & Node.js with no boilerplate

    2022 · wasp.sh · its alternatives →

  17. 17

    Webcodesk - Web App Builder for Create React App. Contribute to webcodesk/webcodesk-srv development by creating an account on GitHub.

    2020 · github.com · its alternatives →

  18. 18

    Discover the best resource for learning web programming

    2023 · 1amitarora.gumroad.com · its alternatives →

  19. 19

    Javascript snippets that can make your coding life easier

    2023 · 1amitarora.gumroad.com · its alternatives →

  20. 20

    Want to upgrade your JavaScript skills and learn React.js? Learn how to build websites and web apps in just a couple of afternoons.

    2015 · reactforbeginners.com · its alternatives →

  21. 21

    The 7GUIs tasks written in vanilla HTML, CSS & JS.

    2021 · 7guis.bradwoods.io · its alternatives →

  22. 22

    The modern IDE for web platform developers

    2020 · webcomponents.dev · its alternatives →

  23. 23

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

    2017 · codewich.com · its alternatives →

  24. 24

    Learn programming for free. Backed by Crypto.

    2021 · 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 →