FTP Library Overview


The SmartFTP FTP Library ActiveX component (COM) provides file transfer functionality using the FTP and SFTP protocol. It offers a wide range of features, reliable and secure file transfers (SSH and SSL/TLS). The component takes advantage of the COM technology which makes it possible to use it in numerous environments such as Visual Basic, Visual C++, JavaScript/VBScript, VB.NET, C#.NET, Delphi, etc.

Download FTP Library

If you are looking for SmartFTP, the ftp client, please go to its download page.



  • Upload, Download with Resume capability
  • Rename, Make and Remove Directory
  • Move/Rename and Delete File
  • IPv4 and IPv6
  • International Domain Names (IDN)
  • Enhanced NAT/UPnP/ICS/ICF Support
  • UTF8 / Unicode Support
  • SOCKS4, SOCKS4A, SOCKS5, HTTP Proxy Support
  • Support for 64-bit file size (> 4GB)
  • Transfer Speed Limits (Global and per connection)
  • File Logging
  • Multi Language Support
  • On the fly file encryption New
  • Native Windows x64 (64-bit) support
  • FIPS 140-2, 186-4 compliant
  • Compatible with Windows 7, 2008 (R2), 2012 (R2), 8, 8.1, 10
  • Complete HTML Help Documentation


  • Server to Server (FXP) Transfers
  • Secure Transfers (SSL/TLS)
  • Compression (MODE Z)
  • Transfer Integrity (XCRC, XMD5, XSHA1)
  • Machine Readable Listing (MLSD)
  • FTP Parser (Unix, MLST, VMS, MVS, DOS, HP-UX, zOS)
  • Enhanced NAT/UPnP/ICS/ICF Support
  • FTP Proxy Support (Wingate, Checkpoint FW-1, Transparent, etc)
  • Set/Get Modified File Time (MDTM, MFMT, SITE UTIME)
  • IP Repeater
  • Local Port Limitation
  • Set Unix Attributes (SITE CHMOD Wrapper)


  • SFTP Protocol Version: 1-6
  • Host Key Algorithms: RSA, DSA, ECDSA, Ed25519
  • Encryption Algorithms: aes128-ctr, aes256-cbc, aes192-cbc, aes128-cbc, 3des-cbc, arcfour, aes128-gcm@openssh.com, aes256-gcm@openssh.com
  • Key Exchange: DH, DH group exchange (DHGEX), Elliptic Curve DH (ECDH), Curve25519
  • Authentications: password, publickey, Kerberos v5 (GSSAPI/SSPI), Smart Card (PKCS#11), X.509 certificates, keyboard-interactive, SecurID, hostbased, none
  • Compression: zlib, zlib@openssh.com, none
  • HMAC Algorithms: hmac-sha2-256, hmac-sha2-512, hmac-sha1, hmac-md5
  • Performance: Optimized assembler for performance critical algorithms.
  • Interoperability: Tested against all public available SFTP/SSH server implementations. Automatically uses workarounds for faulty implementations.