Composer vs Ghostwriter

Composer is a web-based, real-time Markdown editor where people and AI agents work on shared documents. Agents connect through MCP and join documents as collaborators, with permission to read and write shared content. Changes synchronize across teammates, devices, and sessions. Composer uses plain Markdown, keeping files readable in other editors, and supports Markdown export. The listed publishing workflow is none. Free users receive unlimited public documents and collaborators, plus up to seven private documents, three collaborators per private document, and a 10 MB upload limit. Pro removes the private-document and collaborator limits and adds early access to new features. Pro Annual costs $5.99 a month billed annually at $71.88 a year; Pro Monthly costs $7.99 a month billed monthly. Users can cancel anytime, with paid access continuing through the period. Stripe handles checkout.

Ghostwriter is a free Markdown text editor for distraction-free writing, available on Linux and Windows, with unofficial community-provided macOS support. It stores documents as local files and previews Markdown as HTML, which can be copied or exported. GitHub-flavored Markdown is supported, and export options include HTML, Pandoc, MultiMarkdown, and commonmark. Focus Mode highlights a selected area around the cursor, such as a line, sentence, paragraph, or three lines. Full-screen mode and Hemingway Mode provide other writing setups; Hemingway Mode disables backspace and delete. The editor includes light and dark themes, with options to create custom themes. Writers also get live word counts, document and session statistics, a document outline, autosave, and file backups. Linux installation instructions cover Ubuntu, Fedora, and Arch Linux. The Windows download page lists a portable 64-bit version for Windows 10. On macOS, users must compile the source because an installer is not available. Ghostwriter is distributed under the GNU General Public License version 3.0.