If you're looking to Download Secure Terminal on your Chromebook laptop Then read the following guideline.

Access multiple SSH server, with full support of "xterm-256color" emulation. Base Features: • SSH connection with password or key authentication: DSA, RSA, ECDSA, Ed25519 (OpenSSH format & Putty PPK) • SSH Agent • Key generation (RSA, ECDSA, Ed25519) • Support for FIDO key (iPhone NFC only) • Secure Enclave Key • Support for Sixel image protocol • Connection params are safely stored on Keychain • Connection history & localization • Connection through SSH proxy • Connection with Telnet protocol • External keyboard support • Terminal colors customization • Multiple font size • Image background • User font choice (fixed width only) • Pointer/Mouse support PRO Features (require in-app purchase): • Upload/Download files through SFTP • Port forwarding • Local text editor • Store unlimited connections • Files plugin support • Shortcuts support • Commands snippet