Rook
userook.appA native Mac notes app for the code you write, paste, and keep around.
Dev Toolsnotesmacoscode-snippetssyntax-highlightingnative-appmarkdowndeveloper-tools

About
Rook is a free, native macOS notes app designed specifically for developers who work with code snippets. It supports syntax highlighting for 17 programming languages, rich text with code blocks, and five built-in themes. All notes are stored locally with no cloud account required.
Problem
Developers need a fast, local notes app that natively understands and highlights code without requiring cloud accounts or sign-ups.
For
macOS developers and programmers who keep code snippets and notes
How it works
A native Mac app that lets users write and organize notes with rich text and syntax-highlighted code blocks, stored entirely on the local machine.
Business model
freemium
Status
launched