$ creating session...
✓ generating share link
→ redirecting you now
real-time collaborative code editor. share a URL — your team joins.
SyncodeLive is a real-time collaborative code editor — open a session, share the link, and you’re pair-programming in seconds. An AI reviewer watches your code as you type, flags bugs and complexity, and responds like a teammate. JavaScript and Python run in your browser. 26 languages total. No signup, no install, free forever.
see how it works
— teams cooking in Sync
1// syncodelive — shared session · ai review streaming
2
3import Anthropic from '@anthropic-ai/sdk';
4
ketul
5const claude = new Anthropic();
6const stream = await claude.messages.stream({
7 model: 'claude-opus-4-7',
asha
8 system: 'review the diff. one fix, blunt.',
9 messages: [{ role: 'user', content: diff }],
10});
11for await (const chunk of stream) console.log(chunk);
12
13// claude says ↓
14"line 7 leaks an async race — await Promise.all(tasks) or you get UB."
syncodelive/ x7k2mq/ JavaScript/ 3 collaborators
<100ms
global sync latency
free
forever, no credit card
01 coming soon
Drop into a public room like a chess.com lobby — pair with strangers, or join a room where an AI agent walks you through a concept step by step. No signup, just show up and code.
02
Every keystroke broadcasts to everyone on the link. Named cursors with avatars show who is where. Sub-100ms sync, no signup, no installs.
03
JavaScript and Python execute right in your browser. Go, Rust, Java, C++, Ruby, SQL, Shell and 20 more run through an LLM-powered execution layer that returns output as if the compiler were installed.
04
An LLM reads your code as you finish a thought and surfaces bugs, complexity issues, and one concrete suggestion — animated, glanceable, no extra clicks.
05
6-char slug, no login. Open it on your phone, paste it in Slack or Discord. Collaborate live in under 10 seconds. Free forever.
$tail -f /syncodelive/releases_
One short note per release. Unsubscribe in one click.
#never sold, never shared, never spammed.
Yes. SyncodeLive is free with no credit card, no trial, and no paid tier. Every feature, including voice chat, the AI reviewer, read-only sharing, the share-with-LLM flow, and execution across 26 languages, is available to every user at no cost.
No. Click new session and you get a shareable URL immediately. No email, no password, no account. Anyone you send the link to can join with one click and edit alongside you in real time.
Open syncodelive.com, click new session, and you get a URL like syncodelive.com/x7k2mq. Paste your code into the editor, then send the URL in Slack, Discord, email, or any chat. Your teammate opens the link and you are both in the same editor with live multi-cursor editing, an AI reviewer in the session, and optional voice chat. No signup on either side.
Click the brainstorm-with-your-LLM button in the editor. It copies a pre-written prompt to your clipboard. Paste it into ChatGPT, Claude, Gemini, or any LLM that can fetch URLs. The prompt tells the LLM to fetch your session JSON before every turn, so as you edit in real time the AI reads the latest state. The LLM can also POST a proposed edit back; you see a diff card in your editor and approve or reject with one click.
Yes. JavaScript runs natively in your browser. Python runs in a WebAssembly runtime, also in the browser, with no server round-trip. Twenty-four more languages (Go, Rust, Java, C, C++, C#, Ruby, PHP, Swift, Kotlin, Scala, R, Dart, Lua, Perl, Shell, SQL and others) run through an edge LLM that emulates the compiler. No installs, no accounts, no setup.
26 languages with real execution: JavaScript and Python run natively in the browser; TypeScript, Go, Rust, Java, C, C++, C#, Ruby, PHP, Swift, Kotlin, Scala, R, Dart, Lua, Perl, Shell, and SQL run through an edge LLM emulator that returns the output a real compiler would produce. SyncodeLive also supports .prompt as a first-class language for writing and iterating on prompts for ChatGPT, Claude, and other LLMs.
Yes. Every session has built-in voice chat using peer-to-peer WebRTC, so audio goes browser to browser without passing through our servers. Push-to-talk is on the space bar, and the in-session call dock shows who is speaking. Voice is included for every user at no cost.
Yes. The session owner can flip a read-only toggle in the editor. Everyone else on the link still sees your live cursor and edits in real time, but cannot type. This is useful for code reviews, demos, teaching, and presentations. Read-only mode is free; it is not gated behind a paid tier.
codeshare.io has done real-time code sharing since 2013 and supports multi-cursor editing, code execution, and video chat on its Pro tier. SyncodeLive starts from the same one-link sharing idea and adds three things: an AI reviewer in every session that reads your code as you type, voice chat built in for free, and a wider language reach (26 languages with execution, including via an edge LLM emulator for the long tail). SyncodeLive has no paid tier.
Replit, CodePen, and StackBlitz are full project environments. They are great when you are building or hosting an application. SyncodeLive is built for the moment you want to share a snippet and work on it with someone in real time without setting anything up. No account, no container boot, no project to create. Open a URL, share it, and the editor is live in seconds. The AI reviewer is in every session for free.
Sessions live for 48 hours after the last edit. As long as someone keeps editing, the session stays at its URL. Once 48 hours pass with no activity, the session is cleared and the URL returns a 410 Gone response. There is no signup, no inbox of saved files, and no project to manage. The link is the entire session.
Sessions are not publicly listed and not indexed by search engines. The URL is a 6-character random ID with 2.2 billion possible combinations, so the link is unguessable in practice. Anyone with the link can read and edit by default, which is the point of a share-link tool. Use read-only mode to lock editing. Do not paste real secrets or credentials into any public-share tool, including this one.
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