Dev tools · alternatives · 2026
24 alternatives to SyncFiddle – A real-time HTML, CSS and JavaScript multi-user editor
SyncFiddle is a free online HTML, CSS and JavaScript playground and real-time collaborative code editor. Write, run and share code instantly in your browser. Handy for remote pair programming, teaching, seminar, workshop, live stream, troubleshooting, interview, 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. SyncFiddle – A real-time HTML, CSS and JavaScript multi-user editor launched in 2015; newer entries below may have overtaken it.
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Inspired by the design and UI/UX of apps like Notion, and utility of open-source apps like StackEdit, I decided to create a minimalistic, local-only WYSIWYG Markdown editor. Some features worth highlighting: - Monaco editor and Prettier integration for code snippets - Tables (apparently the holy grail of WYSIWYG editing) - Embeds (for CodePen, CodeSandbox and YouTube, most useful for HTML or JSON exports) - Accepts Markdown paste-in, and "exports"/generates HTML, Markdown and JSON outputs - Collaboration (with real-time awareness and initial commenting system, available only when…
2023 · editor.vrite.io · its alternatives →
- 2
Anyfiddle▲145Build, run and share code in any language from your browser
2021 · anyfiddle.com · its alternatives →
- 3
Devsync▲319Visually edit CSS. Live-sync the result with your editor.
2020 · devsync.co · its alternatives →
- 4
Hey guys! I’ve been working on a web app called CodeCafé—a collaborative, browser-based code editor inspired by VS Code and Replit, but with no downloads, no sign-up, and zero setup. You just open the link and start coding—together. The frontend is built with React and TypeScript, and the backend runs on Java with Spring Boot, which handles real-time editing via WebSockets. For syncing changes, I’m using Redis along with a custom Operational Transformation system (no third-party libraries!!!). The idea came after I found out a local summer school was teaching coding using Google Docs (yes,…
2025 · github.com · its alternatives →
- 5
I built a web-based HTML/CSS/JS editor focused on speed, simplicity, and offline access. No bloat — just open and start coding. What makes it different: Live Preview – Edit HTML, CSS, and JS side-by-side with instant feedback. Offline support – Works without internet. You can even install it as a PWA and use it like a native app. No Login Required – Just visit, code, and preview. Login only if you want to save/share. Savable & Shareable Links – Save scripts in the cloud and get shareable links. Customizable Editor – Themes, fonts, auto-format on save, layout tweaks, line…
2025 · scriptpad.dev · its alternatives →
- 6
Test your C# code online with .NET Fiddle code editor.
2013 · dotnetfiddle.net · its alternatives →
- 7
A web-based collaborative LaTeX editor. Contribute to overleaf/overleaf development by creating an account on GitHub.
2014 · github.com · its alternatives →
- 8
Real-time collaborative editing plugin for IntelliJ - Floobits/floobits-intellij
2014 · github.com · its alternatives →
- 9
- 10PP
2014 · pairjam.com · its alternatives →
- 11
Local-first collaboration SDK for React, Vue, and Svelte. Batteries-included: Rich text, undo/redo, cursors, and presence. - Dancode-188/synckit
Nov 2025 · github.com · its alternatives →
- 12
CODECAST▲254HTML & CSS editor in your browser with real-time previews
2015 · codecast.me · its alternatives →
- 13
Create and share simple web demos using TypeScript, CSS, and HTML. Prototype new ideas quickly.
2017 · codewich.com · its alternatives →
- 14
Anyfiddle, the online code editor for everyone
2020 · anyfiddle.com · its alternatives →
- 15IM
Hey developers I think we're tired of copying and pasting our codes and sharing links using PasteBin, GithubGist, or Slack. What if you could share the codes without copying the link and share them right from your favorite editor? That was the motivation for creating TurboGist. Right now, it's still in the MVP stage, and I'm trying to gather feedback from developers like you. It's available as a beta in the VS Code Extension store. Can you guys check this out? It'd help me a lot. You don't need to pay any penny, 100% FREE. However, I'm working on introducing a self-hosted feature. Besides, a…
2025 · turbogist.dev · its alternatives →
- 16
We needed a JS-first WYSIWYG DOCX editor and couldn't find a solid OSS option, most were either commercial or abandoned. As an experiment, we gave Claude Code the OOXML spec, a concrete editor architecture, and a Playwright-based test suite. The agent iterated in a (Ralph) loop over a few nights and produced a working editor from scratch. Core text editing works today. Tables and images are functional but still incomplete. MIT licensed.
Feb 2026 · github.com · its alternatives →
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- 18RT
Dynajot (http://www.dynajot.com) aims to be an extremely low friction way to create real-time collaborative applications. With a single javascript include, the library syncs DOM nodes for multiple users across browsers. You can view the code on Github here: https://github.com/rabidsnail/dynajot-sync
2013 · its alternatives →
- 19
2023 · javafiddle.leaningtech.com · its alternatives →
- 20
Hello HN, this is the first time I am putting out a product, so I would like to share it and seek your feedback and suggestions. As a developer and student working with a remote team, we always need to share some context or code with a teammate. For that we used to use codeshare.io. And when working solo, to validate our code or brush up our understanding, we used to use LLM models for it. I identified a few problems: the well known platforms do not have the AI infrastructure, and you cannot run the code within the browser itself. That is where I found the gap, so I decided to build the…
May 2026 · syncodelive.com · its alternatives →
- 21
Hi, HN. Gui, Lucis, and the deco.cx team here — we're a bunch of Brazilians building an open-source, all-in-one web editor for the modern TypeScript dev. Check out our GitHub at https://github.com/deco-cx/deco and discover more at our site https://deco.cx/. We built frontend tools at a hyper-growth e-commerce platform for 9 years. Deco.cx is the thing that we wish existed when we were managing hundreds of enterprise-grade React-based websites. The gist is: JSX, HTMX, TypeScript, Tailwind and Deno. All visually editable in a beautiful, collaborative,…
2024 · deco.cx · its alternatives →
- 22
Everyone's shipping AI tools right now, and here I am with a visual editor. Still, I think many teams are very familiar with the problem of "marketing wants to change the landing page again." I've run into this for years. Campaign pages come in, engineers get pulled in, and tickets stack up. It's usually the same components, just rearranged. A few years ago, at a startup I worked at, we built an internal tool to deal with this. You register your existing React components, they show up as drag-and-drop blocks, and the result is a JSX string. No schema to learn, no changes to your component…
Dec 2025 · github.com · its alternatives →
- 23RT
2012 · cocode.io · its alternatives →
- 24
Domscribe▲95Give your AI coding agent eyes on your running frontend
Mar 2026 · domscribe.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 →