Vireo is a simple, fast, free, native macOS markdown editor, built in Swift. The markdown syntax is beautifully hidden. Files and folders live on your disk no vaults, no plugins, no drama. - 100% free, MIT open source - 100% local — no account, no cloud, no vaults - Native Mac app: tabs, ⌘P quick open, workspace sidebar, table of contents, focus mode - GFM tables with a native cell editor, floating format toolbar - Quick Look extension for Finder - Requires macOS 15+