Added support for FIDO2 ECDSA-SK and Ed25519-SK key authentication. This allowed users to use physical security keys (like a YubiKey) for SSH connections directly within the app.

As of early 2026, the current stable version of Transmit is (released February 2026). While 5.9.0 focused on security protocols, later updates have added: SSH Agent Integration: Support for agents like Bitwarden.

Released on November 2, 2022, stands out as a significant security-focused update for the macOS file transfer client. It modernized the app's authentication capabilities, making it much more "future-proof" for professional developers and IT administrators. Key Features of Transmit 5.9.0