3 tagged collaborative-editing, measured the same way as everything else here.
Instructions file CodexOpenCode
Repository instructions for doco, a React and TypeScript collaborative document editor with real-time multi-user syncing, knowledge-base management, and Markdown and PDF export.
Instructions file CodexOpenCode
AGENTS.md instructions for getnyxdoc/nyxdoc: This version has breaking changes — APIs, conventions, and file structure may all differ from your training data. Read the relevant guide in nodemodules/next/dist/docs/ (resolved from this file's directory; in monorepos the next package may not be visible from the repo…
Instructions file
Claude Code instructions for getnyxdoc/nyxdoc, a project described as: An agent-native document system for people and their external agents.