Oblivion is a cross-platform VPN/tunneling application that provides secure internet access through Cloudflare Warp technology (unofficially) and supports Zero Trust authentication. The application uses a hybrid architecture with a Flutter frontend for the UI and a Rust core for tunnel logic, communicating via FFI on desktop and platform channels on mobile. It supports multiple tunneling protocols (MASQUE over QUIC/HTTP-3, WireGuard) and includes features like split tunneling, traffic obfuscation, and geo-location-based exit node selection. The codebase demonstrates strong engineering practices in platform abstraction, configuration management, and privilege separation, though build complexity and dependency management introduce maintenance challenges.