| Feature | CyberGhost | ExpressVPN | NordVPN (NordLayer) | Proton VPN | | :--- | :--- | :--- | :--- | :--- | | Native router app | No (config only) | Yes (Aircove) | No | No | | Public API | No | No | Yes (Business) | Partial (Proton) | | Browser extensions | Yes | Yes | No | Yes | | Business SSO/SCIM | No | No | Yes | No | | Shortcuts integration | iOS only | iOS + Android | No | iOS + Android |