Bitvise is a proprietary secure remote access software developed for Windows and available as a client and server.

[3] The software is based on the Secure Shell (SSH) protocol, which provides a secure channel over an insecure network in a client-server architecture.

[4] Bitvise software implements version 2 of the Secure Shell (SSH) protocol, SFTP versions 3, 4, and 6, as well as SCP and FTPS according to publicly available standards.

The first released product was Bitvise SSH Server, then named WinSSHD, in 2001, and it was shortly followed by Tunnelier, now Bitvise SSH Client.

[7] They provide a GUI as well as command-line interface to support SFTP, SSH, SCP, and VPN using the TCP/IP tunneling feature.