Nucleus is the Kotlin framework for native desktop apps. Combined with Compose Multiplatform, it forms the most complete desktop application stack ever built.
398
Enables creation of cross-platform system tray applications with native support, offering dynamic menu items, submenus, HDPI improvements, single instance management, and tray position detection using a DSL-style syntax.
78
macOS‑26 visual system delivering 30+ native‑feeling components, light/dark theming, built‑in design tokens (colors, Manrope typography), animations, and zero external UI dependencies.