Show HN: CyberWriter – a .md editor built on Apple's (barely-used) on-device AI

Category: devtools

Tags: markdown-editor, native-macos, ai-integration, knowledge-graph, document-export

Score: 6.7/10 (Innovation: 7, Technical: 7, Documentation: 6, Utility: 6)

CyberWriter is a native macOS Markdown editor that uniquely integrates Apple's on-device AI (Apple Intelligence) alongside support for local/cloud LLMs, while offering built-in LaTeX, Mermaid diagrams, vault-based note linking, and export to PDF/Word/HTML without external dependencies like Pandoc. It's interesting because it combines a modern Obsidian-like knowledge graph workflow with native macOS technologies and AI integration in a sandboxed, zero-dependency application.

Target audience: technical writers, researchers, students, developers who write documentation

Repository: https://cyberwriter.app

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