Composer

Multiplayer markdown editor for humans and AI agents to write together.

Composer is a multiplayer markdown editor designed for collaborative writing between humans and AI agents. It enables real-time editing, inline comments, and agent-assisted drafting. Teams can brainstorm, draft, and refine documents together, with agents that watch and contribute. The editor supports Markdown formatting, templates, and version history. It aims to reduce onboarding friction by providing sample docs and inline tips.

Free

How to use Composer?

Open Composer in your browser. Create a new document or choose a template. Invite teammates by sharing the document link. Agents can be added to watch and assist. Use Markdown syntax to format text. Comment on sections using inline chat. Agents can draft, summarize, or brainstorm ideas. Collaborate in real-time with cursor presence and live updates.

Composer 's Core Features

Real-time multiplayer editing with cursor presence

Built-in AI agents that assist with drafting and brainstorming

Inline comments and chat for contextual feedback

Markdown formatting with live preview

Template gallery for quick starts

Version history and change tracking

No setup required — instant collaboration

Composer 's Use Cases

Team brainstorming sessions

Co-writing blog posts or documentation

Agent-assisted drafting of proposals

Onboarding documents with collaborative editing

Real-time meeting notes and agendas

Educational content creation with student input

Project planning and task lists

Composer 's Pricing

Free

Unlimited documents and real-time collaboration.

Composer 's FAQ

Most impacted jobs

Writer

Product Manager

Developer

Designer

Researcher

Composer 's Tags

#markdown #collaboration #real-time #ai agent #multiplayer #document editor #team

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