Real-Time Collaborative Markdown Editor

Product Idea · Intermediate · JavaScript, React

Problem Statement

Technical teams write documentation in Markdown every day but face a choice between rich-text editors that hide Markdown and plain-text editors with no collaboration features.

Proposed Solution

Build a web-based collaborative Markdown editor with live cursors, conflict-free CRDT-based editing, and instant preview.

Key Features

• Real-time collaboration — Multiple editors with live cursors
• Split view — Edit Markdown, see rendered output
• Conflict-free editing — CRDT-based synchronization
• Markdown-native — Pure Markdown output
• Git integration — Commit directly to a repository
• Export — PDF, HTML, and DOCX export

Technology Stack

• React 18 — UI framework
• CodeMirror 6 — Editor with Markdown mode
• Yjs — CRDT for real-time collaboration
• WebSocket — Real-time communication
• Node.js — Backend server
• PostgreSQL — Document metadata