Remmina

Bastillion is a web-based SSH console that centrally manages administrative access to systems. Web-based administration is combined with the management and distribution of users' public SSH keys. Key management and administration are based on profiles assigned to defined users. Administrators can log in using two-factor authentication with Authy or Google Authenticator. From there they can manage their public SSH keys or connect to their systems through a web shell. Commands can be shared across shells to make patching easier and eliminate redundant command execution. Bastillion layers TLS/SSL on top of SSH and acts as a bastion host for administration. Protocols are stacked (TLS/SSL + SSH) so infrastructure cannot be exposed through tunneling/port forwarding. Also, SSH key management is enabled by default to prevent unmanaged public keys and enforce best practices. Bastillion is available for free use under the Prosperity Public License.

WinSCP is a popular SFTP client and FTP client for Microsoft Windows! Copy files between a local computer and remote servers using FTP, FTPS, SCP, SFTP, WebDAV, or S3 file transfer protocols. WinSCP is an open source free SFTP client, FTP client, WebDAV client, S3 client and SCP client for Windows. Its main function is file transfer between a local and a remote computer. Beyond this, WinSCP offers scripting and basic file manager functionality. Graphical user interface, translated into many languages. Integration with Windows (drag & drop, URL, shortcut icons). All common operations with files, and support for SFTP and SCP protocols over SSH and FTP and WebDAV and S3 protocols. Batch file scripting and command-line interface and .NET assembly for advanced programming tasks. Directory synchronization in several semi or fully-automatic ways. Integrated text editor, shares site settings with PuTTY, and supports password, keyboard-interactive, public key, and Kerberos authentication.