The best replacement for ssh is ssl.

The best alternatives to ssh are rated as following:
★★★★★  ssl
★★★★  telnet
★★★★  vpn
★★  ftp
★★  ssh2
★★  sftp
★  openssh
★  rsh
★  putty
★  sshd
★  https
★  vnc
★  scp
★  openvpn
★  ipsec
★  rdp
  https git
  pgp
  samba
  ftp faster
  remote desktop
  ifile
  tls
  shh
  mosh
  rlogin
  ssl ftp
  ftps
  secure ftp
  kerberos
  secure shell
  ssh tunnel
  telnet cisco
  stunnel

Your alternative for ssh is not listed? Suggest!
Speaking about ssh, one probably shouldn't forget about password.

Other search terms related to ssh and their ratings are:
★★★★★ password
★★ cygwin
★ no password
★ public key
★ private key
★ port
★ password linux
★ passphrase
★ pem
★ port forwarding
★ cydia
★ command
★ putty
★ login
x11
winscp
password authentication
x forwarding
expect
cyberduck
vnc
You have in mind a companion for ssh and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of ssh in all years. Click on graph for more.
ssh
ssl
telnet