The most secure and legitimate way to use SecureCRT for free is through the official trial program. 30 days.

Offers a free "Home Edition" that includes an X11 server, tabbed SSH client, and several network tools in a single application.

: You can download a fully functional trial of SecureCRT for Windows, macOS, or Linux. This evaluation copy allows access to all enterprise features, including SSH2 support, session management, and scripting.