SeKey - Use Touch ID / Secure Enclave for SSH Authentication.
BLESS - SSH Certificate Authority that runs as an AWS Lambda function and is used to sign SSH public keys.
sslh - Applicative Protocol Multiplexer (e.g. share SSH and HTTPS on the same port).
Eternal Terminal - Re-Connectable secure remote shell.
WebSSH - Web based ssh client.
jass - Tool to facilitate sharing of secrets using SSH keys.
rtop-bot - Bot for Remote Server Monitoring over SSH.
ssh-vault - Encrypt/decrypt using ssh keys.
sshcommand - Turn SSH into a thin client specifically for your app.
ssh-p2p - SSH p2p tunneling server and client.
xxh - Bring your favorite shell wherever you go through the ssh.
Smallstep - Single Sign-on SSH & Production Identity. Say Goodbye to SSH Key Management.
Step CLI - Toolkit for working with your public key infrastructure (PKI).
SSH tutorial - Small guide how to use SSH.
PSSH - Provides parallel versions of OpenSSH and related tools, including pssh, pscp, prsync, pnuke and pslurp.
SSHDog - Small portable SSH server in Go.
assh - Transparent wrapper that adds support for regex, aliases, gateways, dynamic hostnames, graphviz, json output, yaml configuration, and more to SSH.
Paramiko - Leading native Python SSHv2 protocol library.
boxssh - Server that boxes you into a container.
boringproxy - No-frills HTTPS/SSH tunneling solution with as much automation as possible. Designed for self-hosters.