Real-Time Collaborative Code Editor
Muhammad Umair Naseer
Multiple people edit the same code at the same time, with live cursors and selections, and every screen converges to the identical document, with no central server deciding the order of keystrokes. It even survives editing offline and reconnecting. Built with React, Vite, TypeScript, Yjs (CRDT) and CodeMirror over WebSockets, with tests proving convergence.
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Posted Oct 29, 2026
Multiple people edit the same code at the same time, with live cursors and selections. It even survives editing offline and reconnecting.
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