Neutron-Live Code Editor
Offline code editor just like codepen.io
Neutron-Live Code Editor launched on October 31, 2019 with 5 votes, #1,348 of 3,363 launches that month. The site was not reachable when checked in September 2026.
What it does
Neutron is a live code editor built on web technologies for web developers basically it runs your code in realtime.You just write code and it will show you the output or preview of your code side by side just like you do on codepen.io.
Does a similar job
all alternatives →- AEAtomic Editor – Obsidian-style live preview for CodeMirror 6May 2026 · kenforthewin.github.io · ▲67
CodeMirror 6 markdown editor with Obsidian-style inline live preview. Live demo.
- RLReact-live2015 · dariocravero.github.com · ▲31
- FAFresh – A new terminal editor built in RustDec 2025 · sinelaw.github.io · ▲187
I built Fresh to challenge the status quo that terminal editing must require a steep learning curve or endless configuration. My goal was to create a fast, resource-efficient TUI editor with the usability and features of a modern GUI editor (like a command palette, mouse support, and LSP integration). Core Philosophy: - Ease-of-Use: Fundamentally non-modal. Prioritizes standard keybindings and a minimal learning curve. - Efficiency: Uses a lazy-loading piece tree to avoid loading huge files into RAM - reads only what's needed for user interactions. Coded in Rust. - Extensibility: Uses…
CodeCafé – A real-time collaborative code editor in the browser2025 · github.com · ▲81Hey 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,…
More dev tools this month
the category →
open-source IDE for thoughtful software design. Contribute to devdotfast/whiteboard development by creating an account on GitHub.
Dev tools · 27d ago · github.com
Contribute to reladraw/reladraw development by creating an account on GitHub.
Dev tools · 25d ago · github.com
OpenBot▲362Grok Bot alternative: free, local, open-source, multiplayer
Dev tools · 22d ago · openbot.run
Talanoa▲343Hi 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
CoreSpeed▲332One MCP for everything your agents need: apps, memory, tools
Dev tools · 28d ago · corespeed.io
Source: Product Hunt launch ↗
Launched alongside, October 2019
the whole month →
Bel▲1,288Life & fun · 2019 · paulgraham.com
Create free personalized illustrations from 3000+ elements
Growth · 2019 · icons8.com
The next generation of temperature controlled mugs
Life & fun · 2019 · ember.com
