YNQ is a portable SMB server and client stack developed by Visuality Systems, written in ANSI C and designed to run on embedded, IoT, or non-Windows systems while ensuring full interoperability with Windows-based machines. It enables remote file operations (write, edit, copy, delete, update) over a network without needing to transfer entire files locally, while maintaining a small resource footprint ideal for constrained environments. YNQ supports full compatibility across all SMB dialects (from NTLM 0.12 through SMB 3.1.1), including backward compatibility, making it broadly applicable across SMB ecosystems. It offers security features such as Kerberos (domain-join, delegation), NTLM/NTLMv2, message signing, SMB encryption, and pre-authentication integrity. YNQ is modular and comprises four product components; Standalone Client, Corporate Client (with Active Directory registration capability), Standalone Server, and Corporate Server.