This is a Windows-compatible server software that provides secure FTP, explicit and implicit TLS FTPS, and SFTP capabilities. It operates as a system service and supports large files, virtual folders, and PKI authentication. It also features event handlers, global and per-user security, and personal use is free.

One of the most impressive features of Syncplify.me Server! is its support for multiple file transfer protocols, including plain FTP, explicit FTPS with TLS, implicit FTPS with TLS, and SFTP. Additionally, the software includes basic support for secure shell (SSH-2) and forwarding tunnels. The software runs as a system service, ensuring that it is always available and cannot be easily shut down or interrupted.
The advanced features of Syncplify.me Server! provide even greater flexibility and security. The software includes PKI authentication with multiple key-pairs per user, advanced FTP(S) and SFTP security settings, automatic blacklisting, real-time monitoring, virtual folders with per-folder security, IP-based and per-user security (white-lists), a powerful event-handling subsystem, an easy-to-use graphical Configuration Manager, and a command-line interface configuration tool.
Overall, Syncplify.me Server! is an impressive software application that provides secure file transfer capabilities for Windows-based systems. With its support for multiple protocols, customizable security settings, and intuitive interface, it is an excellent choice for anyone looking for a secure and reliable FTP, FTPS, or SFTP server solution.
Version 4.1.9.459: Added support for several old/legacy FTP protocol commands
Version 4.1.8.458: Added support for the XPWD command (standard PWD command was already supported)
Version 4.1.7.457: Fixed a bug in the closure of the TLS data socket in the 'active' FTPS protocol
Version 4.1.5.455: Added support for IP ranges to black/white/safe lists
Version 4.1.4.454: Adds possibility to specify IP ranges in blacklist, whitelist and safelist