Online List Maker

Online List Maker is a web-based tool for creating and sharing lists that update instantly across all devices. Users generate a unique URL for each list, then share it with others who can immediately start adding items, editing, and checking things off without creating an account or installing an app. The interface is intentionally minimal—no tags, folders, or permission levels—keeping the focus on collaborative list management.

The tool works for grocery shopping, trip planning, potluck coordination, moving checklists, and any scenario where multiple people need to edit one list in real time. It's positioned as a lightweight alternative to apps like Google Keep, Microsoft To Do, and Todoist that require sign-ups. The maker built it with Claude Code and deployed it on Cloudflare Durable Objects for real-time synchronization and data storage.