WinSCP SFTP FTP Client

WinSCP (Windows Secure Copy) is a free and open-source SFTP, FTP, WebDAV, and S3 client for Microsoft Windows. Created in 2000 by Martin Prikryl (who remains the lead developer), WinSCP is developed in the Czech Republic and has become the standard secure file transfer client for Windows, with over 150 million downloads. The project is maintained by Martin Prikryl's company (Institute of Mathematics, Academy of Sciences of the Czech Republic, and later WinSCP net). Key features: protocol support: SFTP (SSH File Transfer Protocol versions 3-6), SCP (Secure Copy Protocol), FTP, FTPS (FTP over TLS, both explicit and implicit), WebDAV (HTTP/HTTPS), and S3 (Amazon S3 compatible storage). SSH key authentication: support for RSA, DSA, ECDSA, and Ed25519 keys. Integrates with Pageant (PuTTY authentication agent) for SSH agent forwarding. Dual-pane or Explorer interface: choose between a Norton Commander-style dual-pane view (local on left, remote on right) or a Windows Explorer-style single-pane view. Drag-and-drop transfers. Synchronized browsing: keep local and remote directories in sync. Directory comparison by file size or modification time. Integrated text editor: edit remote files in a built-in editor or external editor (Notepad++, VS Code). Automatic upload on save. Keep remote directory up to date: watch local directories and automatically upload changed files. Transfer settings: binary or text mode, filename case modification, transfer resume, and transfer presets. Synchronized directory: mirror local and remote directories with options to delete extra files. Queue: background transfers with a transfer queue. Scripting and automation: powerful scripting interface and .NET assembly for programmatic file transfers. Command-line interface. Session saving: store session profiles with host, credentials, and settings. Master password: encrypt stored passwords. SSH tunneling and HTTP proxy/SOCKS proxy support. C++. GPL-3.0.