YPtun

🚀 YPtun — Multi-Core VPN & Proxy Client

YPtun is a free and open-source multi-platform VPN and proxy client that combines several networking engines in one application. It supports Xray, sing-box, AmneziaWG, Hysteria2, MasterDNS, VK-TURN, and additional transport technologies, giving users multiple ways to configure and manage their connections.

The application is a client rather than a VPN service. Users can import their own configurations, subscriptions, or supported server profiles.

🌐 Multiple Networking Engines

YPtun can work with several connection engines:

• Xray • sing-box • AmneziaWG • Hysteria2 • MasterDNS • VK-TURN • olcRTC — currently a legacy engine

The appropriate engine can be selected automatically based on the configuration or chosen manually.

🔗 Protocols & Transports

Supported configurations include:

• VLESS • VMess • Trojan • Shadowsocks • Hysteria2 • WireGuard / AmneziaWG

Transport support includes TCP, WebSocket, gRPC, HTTPUpgrade, XHTTP, TLS, Reality, and uTLS fingerprinting.

📡 MasterDNS & Alternative Tunnels

MasterDNS provides DNS-based tunneling for configurations where conventional connections may not be available. The project also supports VK-TURN and other specialized tunnel engines as alternative connection methods.

YPtun can additionally provide a separate Telegram proxy through a WARP-based connection, allowing Telegram traffic to use a local SOCKS5 endpoint independently of the main connection.

📦 Free Server Catalog

Recent versions include a built-in catalog of free server configurations. Servers can be downloaded and automatically tested on the device, with unavailable entries filtered out before they are offered for use.

This provides a practical way to evaluate available public configurations directly from the user's device.

🔀 Profiles & Routing

YPtun supports subscription management, server profiles, and routing profiles compatible with Happ-style configurations.

Users can import supported links and subscription data, organize servers, test connectivity, and apply routing rules to control how traffic is handled.

📱 Android Features

On Android, YPtun uses the system VpnService and can route device traffic through the selected networking engine.

The application supports:

• Full-device VPN routing • IPv4 and IPv6 traffic • Automatic reconnection • Network-change handling • QR-based configuration import • Subscription management • Traffic and connection monitoring • Multiple APK architectures

Android 6.0 (API 23) and newer are supported.

🖥️ Cross-Platform

YPtun is designed for Android, Windows, and Linux, with an iOS version currently available in beta. The project uses a shared architecture while adapting networking and system integration to each platform.

🔐 Open Source & Licensing

YPtun is released under the GNU GPL-3.0 license. Its bundled components retain their respective licenses, including Xray under MPL-2.0 and AmneziaWG-Go under MIT.

⚠️ Important: YPtun does not provide guaranteed VPN service or server availability. Connection quality depends on the selected server, subscription, networking engine, and current network conditions. The olcRTC engine is currently considered legacy and is planned for removal in a future release.

✨ YPtun brings multiple VPN engines, modern proxy protocols, DNS tunneling, server testing, routing profiles, and cross-platform support together in one flexible networking client.

📜 License OLCVPN / YPtun is distributed under the GNU General Public License v3.0 (GPL-3.0). It bundles sing-box, which requires GPL-3.0 for the combined product. Third-party components retain their own licenses, including MPL-2.0, MIT, WTFPL, Apache-2.0, and GPL-3.0, depending on the component.