Windows SFTP client apps

Specialized applications from connecting to SFTP.

Bitvise SSH ClientSSH tunneling, SSH terminal emulation and SFTP client. Commercial.
FileDropAn SFTP client designed for Desktop drag and drop and fast switching between remote connections and fast upload.
Filezilla ClientFree and open source FTP, FTP/SSL and SFTP GUI client (beware of adware)
FlashFXPSFTP/FTP client for Windows. Commercial. Not updated since 2017.
GoAnywhere SFTP client for MFTSFTP client from creators of GoAnywhere MFT server. Commercial.
SmartFTPFTP (File Transfer Protocol), FTPS, SFTP, WebDAV, S3, Google Drive, OneDrive, SSH, Terminal client. Commercial.
Tectia SSH ClientSFTP/SSH client from the creators of the SSH protocol. Commercial.
VanDyke SecureFXSFTP/FTP/SCP client for Windows, Mac and Linux. Commercial.
Win SCPFree and open source SFTP GUI client. Despite its name it's not limited to SCP, but works with SFTP and FTP/SSL too.
WS_FTPFTP and SFTP client

SFTP plugins for popular apps

Chrome sFTP ClientsFTP Client for Google Chrome / Chrome OS.
SFTP plugin for Total CommanderOfficial plugin from the creators of Total Commander. Free.

Command-line clients

Use those if you want to access SFTP from a script or if you simply prefer command line over GUI.

Bitvise Command-Line SFTP ClientAdvanced command-line SFTP client for Windows. Commercial.
OpenSSHOpenSSH's 'ssh' command is available on most Un*x systems. Free and open source. Windows port is included in CygWin.
Push SFTPAn open-source command line client that has a full set of SFTP commands, with fast upload.
PuTTY PSFTPPuTTY SFTP tool for those who are not afraid of command line. Available for Windows and Un*x-like systems. Free and open source.

Map SFTP server as a network drive

Do you want to use a SFTP connection as a Windows mapped drive? Assign it a drive letter and use it from any application? Try one of those:

ExpandDriveSFTP, FTP, DropBox, GoogleDrive, OneDrive and few others. Commercial. Windows and Mac.
NetDriveSFTP, FTP, DropBox, GoogleDrive, OneDrive and few others. Commercial. Reverts to a limited free version when the trial is over. Windows.
SFTP NET DriveSFTP. Commercial. Free for personal use. Windows.
SSHFS for LinuxEnables you to mount a remote folder on Linux over SSH. FUSE-based, free and open source. Part of most Linux distros.
SSHFS for OS XSSH File System for MAC OS X based on FUSE for OS X. Free and open source.
Web DriveSFTP, FTP, DropBox, GoogleDrive, OneDrive and few others. File system level locking symantics. Synchronization mode and network drive mode. Commercial. Windows, Mac, iOS and Android.
win-sshfsMaps remote SFTP drive and make it available to all applications. Open source, last updated in 2012. Works on Windows 7, newer OS versions are not supported. Several forks exists.
WinSshFS 4every1 editionFork of win-sshfs which works on Win10. Free and open source.
WinSshFS FiSSH editionFork of win-sshfs focused on UI changes. Free and open source.