by Bitvise Limited Fast, robust, easy to use SSH server for Windows with secure TCP/IP tunneling; SFTP and SCP file transfer; VT100/xterm; Windows group, domain account support; public key and Kerberos authentication; virtual accounts; powerful configuration.
by Incognito Systems iGo Incognito - Secure communications using a public key infrastructure and the Advanced Encryption Standard (AES). Supports rich voice/text messages, offline and online messages, private chats, open forums, file transfer and more...