Core Tunnel is described as 'The best way to manage your SSH tunnels, with OS X Keychain integration. You can manage multiple tunnels in parallel, supports password/keyboard/pubkey authentication methods, creates local/remote/dynamic port forwarding tunnels & more' and is a SSH Client in the network & admin category. There are more than 25 alternatives to Core Tunnel for a variety of platforms, including Windows, Mac, Linux, Android and iPhone apps. The best Core Tunnel alternative is PuTTY, which is both free and Open Source. Other great apps like Core Tunnel are Windows Terminal, MobaXterm, KiTTY and Bitvise SSH Client.