OneBoxN

Native architecture

Rust 1.99.1 / obox

Platform-native components power the interface, while obox, our network core written in Rust, handles networking. Designing the client and core together reduces architectural layers and bridging between technology stacks. OneBoxN uses a proprietary, non-open-source commercial license.

• Windows
• macOS
• Android
• iOS

Native on every platform

Each platform uses its own language, interface framework, and system networking APIs, powered by the same Rust obox core.

• Windows

  C# 14 · .NET 10 · WPF

  .NET SDK 10.0.401 · Runtime 10.0.12 · WPF-UI 4.3.0

  Native desktop interface

  C# and WPF power the desktop interface, with layouts defined in XAML and Fluent styling through WPF-UI components. Windows, keyboard interactions, and the system tray integrate with the Windows desktop.

  System service and core

  A separate Windows service hosts the network tunnel independently of the interface process. C# calls obox’s native library through P/Invoke to connect to the Rust network core.

• macOS

  Swift 6.0 · SwiftUI · AppKit

  Swift 6 toolchain, with the app and shared packages in Swift 6 language mode; SwiftUI and AppKit are provided by Apple’s platform SDK.

  Native Mac experience

  Swift and SwiftUI build the interface, while AppKit connects desktop windows, the menu bar, and system interactions. The interface works with macOS window management, appearance, and interaction conventions.

  System network extension

  NetworkExtension and a Packet Tunnel extension integrate the tunnel with macOS. Swift bindings connect system networking to the Rust obox core, with separate responsibilities for the interface and tunnel.

• Android

  Kotlin 2.4.10 · Jetpack Compose · Material 3

  Compose UI 1.11.4 · Material 3 1.4.0 · Compose BOM 2026.06.01

  Native Android interface

  Kotlin and Jetpack Compose build a declarative interface with Material 3 components. ViewModel and Kotlin coroutines manage interface state and asynchronous tasks alongside the Android lifecycle.

  System VPN service

  Android VpnService integrates with the system VPN and tunnel interfaces. Kotlin calls obox through UniFFI-generated native bindings, connecting Android services with the Rust network core.

• iOS

  Swift 6.0 · SwiftUI · UIKit

  Swift 6 toolchain, with the app and shared packages in Swift 6 language mode; SwiftUI and UIKit are provided by Apple’s platform SDK.

  Native iPhone interface

  Swift and SwiftUI build the interface, with UIKit integration for system capabilities such as camera previews and the clipboard. Apple’s native components handle platform interactions.

  System tunnel extension

  NetworkExtension’s NEPacketTunnelProvider hosts the network tunnel separately from the app interface. Native Swift bindings connect to obox, while the system VPN framework coordinates connection state and the tunnel lifecycle.

System requirements

• Windows

  Windows 10 or later, build 16299 (version 1709) or higher.

• macOS

  macOS 14 or later.

• Android

  Android 9 or later, API level 28 or higher.

• iOS

  iOS 18 or later.

These are minimum runtime requirements. Maintenance for a particular OS version follows the shorter of the OS vendor’s and development toolchain’s official support windows. Paid extensions such as Windows ESU are excluded.