The ProtonVPN Windows app project hosts the official open-source client software that lets users securely connect their Windows machines to the ProtonVPN service with full system-wide VPN protection. It includes a modern GUI built with .NET and WPF that lets users authenticate, choose VPN servers, and configure features like split tunneling or kill switch, while a background Windows service manages VPN connections using the OpenVPN protocol and handles networking tasks such as firewall and adapter configuration. The app integrates a custom TAP driver and a split tunnel callout driver to help route traffic securely and prevent leaks, and is structured so the GUI and service components work together to deliver a smooth user experience on Windows desktops and laptops. ProtonVPN’s Windows client supports both free and paid users with access to Proton’s global server network, encrypted tunnels, and privacy-first policies that block logging and respect user anonymity.

Features

  • Native Windows GUI for VPN connections
  • Background service managing secure tunnels
  • Integrated OpenVPN support with TAP adapter
  • Split tunneling and kill switch controls
  • System firewall integration
  • Open-source GPL-licensed code

Project Samples

Project Activity

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Categories

VPN

License

GNU General Public License version 3.0 (GPLv3)

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Proton VPN Windows App Web Site

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Additional Project Details

Operating Systems

Windows

Programming Language

C#

Related Categories

C# VPN Software

Registered

2026-01-13