Private front-end code playgrounds

In plain words

Private Front-end Code Playgrounds is a development tool that provides isolated environments for writing and testing front-end code. Launched in 2019, it is designed for web developers who need to experiment with HTML, CSS, and JavaScript in a private setting. The tool allows developers to create and run code snippets without sharing them publicly, making it suitable for practice, prototyping, or working with sensitive projects.

written from the facts on this page · September 2026

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  Wing Playground2024 · winglang.io · ▲253

  Iterate on cloud apps in milliseconds, not minutes

• AP
  A playground for in-browser interpreters2015 · fatiherikli.github.io · ▲79
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  I made a HTMX Playground 100% in the browser2024 · lassebomh.github.io · ▲482

  I recently dug up an old project in an attempt to improve on it. It's a code sandbox for playing around with HTMX in the browser, that runs a mock server within the sandbox iframe. The server "framework" is loosely based on Django, so if you're familiar with Django, you'll immediately understand what's going on. I recommend clicking through the examples. Github repo: https://github.com/lassebomh/htmx-playground Probably my favorite part is the lack of HTMX specific code. It's designed to mimic the client and server, but really nothing else. In principle, this means that…

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  CodeSwing – A CodePen-like interactive playground, built into VS Code2020 · github.com · ▲159

  VS Code extension for building web applications ("swings") using a interactive and editor-integrated coding environment - lostintangent/codeswing

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  vscode Testing Playground2021 · marketplace.visualstudio.com · ▲92

  Bring testing playground into VS Code

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  Web-Playground – An Enjoyable Playground for HTML, JavaScript and CSS2015 · github.com · ▲13

  An enjoyable playground for HTML, JavaScript and CSS - d6u/web-playground

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  /dev/null▲482

  a social network for devs

  Dev tools · 2d ago · dev-null.sh

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  Whiteboard (YC W26) – an open-source IDE for thoughtful software design▲423

  open-source IDE for thoughtful software design. Contribute to devdotfast/whiteboard development by creating an account on GitHub.

  Dev tools · 27d ago · github.com

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  Reladraw – A diagram language where you decide where to place things▲411

  Contribute to reladraw/reladraw development by creating an account on GitHub.

  Dev tools · 25d ago · github.com

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  OpenBot▲362

  Grok Bot alternative: free, local, open-source, multiplayer

  Dev tools · 22d ago · openbot.run

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  Talanoa▲343

  Hi HN, I’m a fullstack developer, and honestly, I’ve lost count of how many side projects I’ve worked on over the years. But one idea kept coming back to me: a different kind of email client. It first came to me in 2014: “What if we could handle emails more like conversations?” Every year, I’d revisit this concept in my “Build Notes.” Ten years later, no one had built exactly what I had in mind — so I finally decided to do it myself. That’s how Talanoa was born. I wanted something focused on people, not timelines. I was tired of marking messages as unread just to remember to reply later, or…

  Dev tools · 20d ago · talanoa.email

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  CoreSpeed▲332

  One MCP for everything your agents need: apps, memory, tools

  Dev tools · 28d ago · corespeed.io

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  Terms & Conditions Generator by iubenda▲891

  Attorney-approved terms and conditions generator

  Dev tools · 2019 · iubenda.com

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  See a Satellite Tonight. No Telescope Required▲863

  Satellites 🛰️ are visible in the night sky, no telescope required, if you know where to look. Find out here.

  Life & fun · 2019 · james.darpinian.com

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  100,000 Faces▲845

  Free resource of 100k diverse faces generated by AI

  AI · 2019 · generated.photos

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  Cyberpunk web design made easy, really easy▲775

  Life & fun · 2019 · augmented-ui.com

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  Browse Reddit in 3D▲720

  Life & fun · 2019 · 3dforreddit.com

• AS
  A Senior Engineer's CheckList▲662

  Sharing something that I wrote for my use but I think can be useful to others (I am an engineer with the title of Senior Software Engineer) Visit [1] for a full list (table view gives a lot of options. See "Controls"). Visit [2] for a summary. The source of the list is at [3] 1. https://littleblah.com/post/2019-09-01-senior-engineer-checklist/ 2. https://medium.com/@littleblah/my-top-25-items-in-a-senior-engineers-checklist-c8e9f9f6e3c2 3. https://github.com/littleblah/senior-engineer-checklist Feedbacks/Pull requests…

  Dev tools · 2019