Multi Commander
File manager GUI
Explorer++
A small and fast file manager for Windows
Directory Opus
Directory Opus for Windows - the Ultimate Windows File manager and Explorer Replacement
Double Commander
ForkLift 4
Manage your files quickly across local drives and remote servers with ease. ForkLift is a robust FTP/SFTP/WebDAV/Amazon S3/Backblaze B2/Google Drive/Rackspace Cloud Files client and a powerful and versatile file manager.
Keka
WinSCP
WinSCP is a popular free SFTP and FTP client for Windows, a powerful file manager that will improve your productivity. It supports also Amazon S3, FTPS, SCP and WebDAV protocols. Power users can automate WinSCP using .NET assembly.