RTCode

Your real-time code
platform for the web.

Elefunc provides the developer tools and edge infrastructure
to quickly build, scale, and secure a real-time, wait-free web.

⚡ Start Coding
⚡

Forget builds, reloads, and waits

Code at thought speed

Build your ideas in real time with⚡RTCode.io

⚡ Start Coding
⚡ Real-time 2-way I ⇄ O Sync
Witness your code come to life! Input changes reflect instantly in the output, and output changes immediately appear back in the input.
🔄 Reload-free Flow
Never lose state! Make the best CSS animations, transitions, and more. No resets, pure code and creativity.
📲 Multi-device Remote Output
Work across real devices! Save time and effort targeting multiple environments at once.
📚 Code Versions
Build with confidence! You can diff against and restore the past. Nothing to configure. Just code and deploy.
⚙️ Workers: Editor → Edge
Code your backend where you code the frontend! Enjoy wait-free iterations, and deploy them globally with 1 click.
📦 Static ESM Imports
Use static URL imports in editor and edge workers. We bundle and cache so smartly, you can work in real time with large imports!
🆔 Single Sign-On
Start deploying instantly! Sign in with GitHub, Google, Microsoft, Facebook, or Apple, and deploy to RTEdge.net.
🌐 RTEdge.net Hosting
Give your code the worldwide edge! 300+ cities in Earth's largest network will host your work without cold starts.
⌨️ Keyboard Superpowers
Fly through your tasks! Rapid-fire keyboard shortcuts for everything. No exceptions!
👌🏻 Select 10rem  &  ↑ | ↓
Perfect your numbers interactively! See your design evolve live. Enjoy a dynamic and interactive design process.
🌐

Launch your code to the digital stratosphere

Global Edge Network

Interact with Earth to explore RTEdge.net 🌐
Click on dots and lines for additional insight.

🌐 Explore
⚡ Edit with RTCode.io
Append /? to deployed URLs to launch RTCode.io right where you left off. You are one touch away from making changes!
🌐 The Worldwide Edge
Spanning 300+ cities with a massive 388 Tbps edge capacity, delivering sub-50ms latency to 95% of the world's internet users.
⚙️ Edge Workers
Develop backends in real-time. Deploy instantly! Faster than Vercel Edge Functions and Deno Deploy.
🚀 Test the speeds
📦 Static ESM Imports
Use static URL imports in editor and edge workers. Use all the code in the world without the pain of manual bundling.
🗃️ Multi-tiered Key–Value Database 
const { user, domain, route } = request.rt;

const kvO  = env.KV.open({              });
const kvOD = env.KV.open({       domain });
const kvOR = env.KV.open({       route  });

const kvU  = env.KV.open({ user         });
const kvUD = env.KV.open({ user, domain });
const kvUR = env.KV.open({ user, route  });
🏡 Sub- and Custom Domains
We run .rt.ht – world's shortest SaaS eTLD. A unique home for your work before you move to custom domains.

Your World-Wide Edge

Deploy your code to Earth's largest network

931
Data Centers
300
Cities
129
Countries
5
Clouds
✨

Build with digital intelligence

Work on bigger things

Collaborate on code&edge with RTCode.ai ✨

Build with AI ✨
✨ Summon code into existence
Generate new code from scratch! Explore uncharted territories with comfort and confidence.
✏️ Review and refactor
Have RTCode.ai explain existing code! Refactor it to suit your style and needs.
🐛 Find and fix bugs
Scan your code for bugs and errors!
Fix your problems before they matter.
🚀

Built on and accelerated by the best!

Cloudflare Microsoft Azure OpenAI AWS Oracle Cloud Google Cloud
❓

Frequently asked questions

Have a different question and can’t find the answer you’re looking for? Reach out to our support team by sending us an email and we’ll get back to you as soon as we can.

What is RTCode.io?
RTCode.io is a real-time web development playground for HTML, CSS, and JS. Changes in your code reflect instantly in the output, and vice versa. It supports in-editor Workers for backend code, that can be deployed to RTEdge.net.
What is RTCode.ai? 🆕
RTCode.ai is our brand-new AI services offering. The agents we develop will assist you in our playground and at the edge.
What is RTEdge.net?
RTEdge.net is our global, multi-cloud, edge network. It gives your creations the world-wide edge with distributed hosting that auto-scales.
What are Workers?
Workers are JavaScript backend code you can write real-time in our editor, and seamlessly deploy to RTEdge.net.
Which browsers does RTCode.io support?
🏢
Elefunc Logo Elefunc Logo

We believe in
a web that builds itself.

Cetin & Sunny, Founders of Elefunc, Inc.

About Elefunc, Inc.

Elemental functions
for a real-time web.

We champion the open web and its ever-evolving, standards-based APIs.

Our Principles:
⚡ Speed over complexity
📐 Standards over trends
📖 Open over proprietary

At Elefunc, we've made a strategic decision: no proprietary frameworks. No Angular, Vue, or React dependencies. Just pure, native web platform APIs. Why? Because universal technologies create evergreen tools. Our products adapt to the web's evolution, not yesterday's framework.

Framework-free means:
⚡ Zero build steps
🔄 No version conflicts
🌐 Works everywhere, forever

Native APIs deliver what frameworks can't:
✨ Unparalleled simplicity and immediacy
👁️ True transparency and control
🗿 Rock-solid stability

By embracing the platform, developers gain deeper understanding, unleashing creativity and innovation.

We're not just building tools—we're strengthening the web itself. Our commitment to open standards sets Elefunc apart. Join us! Harness the raw power of the web to build extraordinary experiences.

🟰

Our team

A close-knit team of individuals, united by the vision to build a better web.

Boost your productivity.
Start building real-time!

⚡ Start Coding