The fastest way for two developers to code together. Sub-10ms real-time multi-cursor synchronization, built-in WebRTC voice rooms, and full Monaco editor intelligence directly in your browser.
Pair programming is an agile software development practice where two engineers work together on the same codebase. OutSync provides an instant, zero-friction browser platform built specifically for remote pair programming: both developers edit the same code in real-time with sub-10ms CRDT multi-cursor presence, communicate over integrated WebRTC voice rooms, and execute code together without installing IDE plugins or creating accounts.
Eliminate screen share lag and conflicting local branch setups with a synchronized browser session.
One developer clicks "Start Pair Programming" to instantiate an ephemeral, encrypted room. No sign-ups or OAuth accounts required.
Copy the unique session URL or share the 8-character room code via Slack, Discord, or Teams. Collaborators open the link directly on any browser.
Toggle the integrated microphone to speak in real time. Audio flows peer-to-peer over DTLS-SRTP encryption without third-party meeting links.
Switch fluidly between writing code and reviewing logic. The driver types while the navigator observes with real-time multi-color cursor highlights.
Execute unit tests and run algorithms in the cloud sandbox. Both participants view synchronized stdout terminal outputs in real time.
One developer writes the code (Driver) focusing on syntax and implementation, while the other reviews architecture, spots edge cases, and directs strategy (Navigator).
Developer A writes a failing unit test. Developer B implements just enough code to make the test pass. Roles alternate after each green test.
Three or more developers tackle complex architectural hurdles or incident debugging in the same shared workspace while communicating over voice.
OutSync uses Conflict-free Replicated Data Types (CRDTs) over WebSockets. Keystrokes are modeled as commutative mathematical operations. Even if both the Driver and Navigator type simultaneously on the same function or line, edits merge deterministically without overwriting text or freezing.
Yes. The built-in WebRTC voice room is completely optional. You can keep your microphone muted and collaborate purely through live multi-cursor visual presence or alongside your team’s existing audio channels.
Yes. OutSync employs standard WebSocket protocols (port 443 over TLS) and automated STUN/TURN traversal servers for WebRTC, enabling seamless connectivity across strict corporate networks.
Yes. OutSync is fully responsive and supports tablet browsers (iPad Safari, Android Chrome) with touch selection, virtual keyboards, and WebRTC audio.
