Kod
Programmers' editor for OS X
...Beyond being “yet another editor,” Kod aimed to explore how a programmer-oriented editor could feel more universal and user-friendly, especially for people who write code but don’t necessarily want an overly complex environment. The repository contains the full editor codebase and related components, but it is also clearly marked as an archived (read-only) project, indicating it’s no longer actively developed. Even so, it remains useful as a reference implementation for macOS editor architecture, UI/editor interaction patterns, and the tradeoffs involved in building a full desktop editor.