libssh

Libssh is a highly regarded software tool that is specifically designed for programmers seeking to create a secure connection between two endpoints through the implementation of SSH. As a library, libssh provides users with complete control over their client, allowing them to remotely execute programs, transfer files, and deploy a secure and transparent tunnel for their remote programs.

The Secure FTP implementation provided by libssh further simplifies the process, allowing users to interact with their remote files with ease, all without requiring third-party programs other than libcrypto - which comes bundled with OpenSSL.

The broad range of applications that utilize libssh's powerful features is truly remarkable. The software is used by programs such as csync, a bidirectional file synchronizer, as well as grdc, the GTK+/Gnome Remote Desktop client. In addition, KDE utilizes libssh for their kio_sftp slave.

All in all, if you are seeking a secure and reliable solution for SSH connectivity in your programming projects, then look no further than libssh. Its extensive range of functionality and ease of use make it an essential component of many software projects today.