Collaborative Screenwriting Web App Development

I need a browser-based screenwriting platform that lets multiple writers work on the same script simultaneously, keeps every line in industry-standard format, and stores a full history of revisions that we can roll back at any time. The app must run smoothly in any modern browser so it’s immediately usable on Windows, macOS, Linux, and mobile without extra installs. Core functionality to build • Real-time collaboration: live cursor presence, conflict-free merging, and in-document chat. • Professional formatting: automatic scene headings, dialogue blocks, parentheticals, page counts, and export to PDF & Fountain. • Script version tracking: per-draft snapshots, diff view, and the ability to label or restore any version. While I’m open to your preferred stack, a modern SPA approach (React, Vue, Angular, or similar) with WebSocket support for low-latency updates makes sense. Back-end language and database are flexible as long as they scale and are well-documented. Deliverable milestones 1. Clickable prototype illustrating the editor, formatting engine, and live cursors. 2. Fully functional MVP deployed on a staging server with user auth, collaboration, and version history. 3. Production-ready build, documentation, and basic unit / integration test suite. I’ll provide detailed UI wireframes and acceptance criteria before development starts; you handle coding, basic UX polish, testing, and deployment guidance. If this aligns with your expertise in real-time web applications, let’s discuss timelines and any questions you have about the workflow.