CyberWriter: Native macOS Markdown Editor Using Apple's On-Device AI

Summary

CyberWriter is a native macOS Markdown editor that leverages Apple's on-device AI capabilities for writing assistance. The application offers live PDF preview, an AI workspace, vault support, LaTeX rendering, Mermaid diagram support, and claims zero external dependencies. It is positioned as a privacy-focused tool that keeps AI processing entirely on-device using Apple's built-in machine learning frameworks. The product surfaced via a Show HN post and represents a small independent developer ef