Grasmere — AI for Writing, Translation & Localization

When you manage a large writing project such as a book, research paper, or long-form runbook, keeping track of sources, citations, and drafts across multiple applications can become disorganized. Grasmere addresses this by combining project planning, source collection, Markdown drafting, and review workflows into a single environment on your Mac. You can import PDFs, web clippings, and references from tools like Zotero, build index cards, and connect your notes using local links. Because the application uses plain Markdown files stored in folders of your choice, you avoid vendor lock-in and proprietary formats. For AI assistance, Grasmere relies on Apple's on-device model by default, meaning features like brainstorming and querying your research work offline without sending text to external servers. This architecture keeps your writing entirely private. When collaborating with editors or peers who use Microsoft Word, you can export your project with comments and re-import their changes without forcing them to adopt Markdown. Publishing options let you output your manuscript to PDF, Word, or generate a website with one click. If you prefer writing in Markdown on macOS 15+ and want local AI assistance combined with structured project management, Grasmere provides a cohesive workspace.