Open Source Rust VPN Software for Windows

VPNCloud is a peer-to-peer VPN solution that uses UDP tunneling to create secure, distributed virtual networks. Unlike traditional VPNs, VPNCloud creates mesh-like connections between nodes and is particularly useful for remote access, private networks, or IoT environments. It supports both encrypted and plaintext tunnels, dynamic peer discovery, and flexible routing. With minimal configuration, VPNCloud provides a lightweight way to link multiple machines across the internet as if they were on the same LAN.

BoringTun is a high-performance, portable implementation of the WireGuard VPN protocol written in Rust, designed so that developers and system integrators can run WireGuard tunnels entirely in user space across a variety of operating systems without kernel modules. It implements the core WireGuard protocol — including key exchange, encryption (ChaCha20-Poly1305), and authenticated transport — while omitting platform-specific tunneling stacks, allowing embedment in custom VPN client applications or userspace networking tools. The repository includes both a library for programmatic use and a command-line executable that can act as a userspace WireGuard interface on supported platforms like Linux and macOS. Because it’s written in Rust, BoringTun benefits from strong safety guarantees, memory safety without garbage collection, and cross-platform support, making it suitable for mobile, desktop, and server environments.