FreeSSHd!

Mosh (mobile shell), the mobile SSH replacement. Remote terminal application that allows roaming, supports intermittent connectivity, and provides intelligent local echo and line editing of user keystrokes. It’s more robust and responsive, especially over Wi-Fi, cellular, and long-distance links.

Dropbear is a relatively small SSH 2 server and client. It runs on a variety of POSIX-based platforms. Features: A small memory footprint suitable for memory-constrained environments - Dropbear can compile to a 110kB statically linked binary with uClibc on x86 (only minimal options selected).Dropbear server implements X11 forwarding, and authentication-agent forwarding for OpenSSH clientsCan run from inetd or standalone.Compatible with OpenSSH ~/.ssh/authorized_keys public key authentication.The server, client, keygen, and key converter can be compiled into a single binary (à la busybox).Features can easily be disabled when compiling to save space.TCP forwarding support »

An SSH server for windows.

PowerShell Server is a full-featured SSH 2.0 server that enables Windows Desktops and Servers with a secure remote entry point to a Windows PowerShell Host. This gives users the power to securely manage Windows remotely through PowerShell from any standard SSH client.

OpenSSH for Windows is a minimal installation of the Cygwin port of OpenSSH and related utilities to provide SSH and SCP services on the Windows platform.

Syncplify.me Server! is the free FTP, FTPS, and SFTP server for Windows by Syncplify, Inc.Powerful, secure, yet very easy to configure, this software simplifies regulatory compliance and operation of a secure file transfer server.Its main features are: support for plain FTP, explicit FTPS (TLS), implicit FTPS (SSL/TLS), and SFTP file transfer protocols, basic secure shell (SSH-2) and forwarding tunnels support, runs as a system service, supports large files (> 4 GB).And it also has several useful advanced features like: PKI authentication with multiple key-pairs per user, advanced FTP(S) and SFTP security settings, configurable automatic blacklist, real-time monitor, virtual folders with per-folder security, IP-based and per-user security (white-lists), powerful event-handling subsystem, graphical Configuration Manager, command-line Interface (CLI) configuration tool.It is totally free, including lifetime updated and upgrades, for personal use. »

SSHDroid is a SSH server implementation for Android.This application will let you to connect to your device from a PC and execute commands (like "terminal" and "adb shell") or edit files (through SFTP, WinSCP, Cyberduck, etc...).

zFTPServer Suite is a user friendly and easy to use FTP server. It offers all the standard FTP features, as well as support for SSL/TLS, transfer limits, real-time monitoring, virtual directories, and user groups. You can also kick a selected user, monitor selected user activity, and set per-user restrictions for logins, transfer limits and speed limits. Additional features include statistics, support for passive connections and customizable logging. (Free for basic FTP server. Using SFTP and other advanced features requires purchase of a license) »

Whether you need file transfer or a wider range of remote access services, it takes reliable, configurable network access software to master evolving security threats and a rapidly changing business environment.

Copssh is an ssh server and client implementation for windows systems. It is a yet another packaging of portable openssh, cygwin, some popular utilites, plus implementation of some best practices regarding security. You can use copssh for remote administration of your systems or gathering remote information in a secure way.