Developer builds SSH Tunnel Manager twice in Rust to compare CLI and GUI trade-offs

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A developer built the same SSH tunnel management tool twice in Rust — once as a CLI application and once as a native GUI using the Tauri framework — to evaluate the real-world trade-offs between the two approaches. Both versions share identical backend logic, shelling out to the system SSH binary to manage tunnels as subprocesses, since no production-ready Rust SSH client library exists for arbitrary key and agent authentication. The CLI version offers easy distribution as a static binary, scriptability, and cross-platform support, but lacks visual feedback when a tunnel drops unexpectedly. The Tauri-based GUI provides ambient status indicators via a system tray icon and eliminates the need for daemon management, but introduces complexity around code signing, notarization, and distribution. The comparison was not intended to declare a winner but to document concrete costs in areas like process management, platform integration, and developer experience.

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