id	Specification	AbsoluteTelnet	Apache SSHD	AsyncSSH	Bitvise SSH	ConnectBot	cryptlib	CycloneSSH	Dropbear	Erlang ssh library	FlowSsh	Georgia SoftWorks SSH	Go Cryptography	iTerminal	JSch	JuiceSSH	libassh	libssh	libssh2	lsh	MindTerm	Mobile SSH	Mocca Telnet (iOS)	Net::SSH	OpenSSH	Paramiko	phpseclib	Poderosa	Prompt 2	PuTTY	Reflection (Android)	Reflection (iOS)	RLogin	salt	SecureCRT	Serverauditor (Android)	Serverauditor (Chrome)	Serverauditor (iOS)	SilverSHielD	SmartFTP	SSH.NET	SSH2	SSHJ	SwiftNIO SSH	Tectia SSH	Thrussh	TinySSH	TinyTERM (Android)	TinyTERM (iOS)	Tera Term	Twisted Conch	vSSH (Android)	vSSH (iOS)	WebSSH	wolfSSH	Xshell 5		# of impls
gssapi-keyex	RFC 4462	No	No	Yes	No	No	No	No	No	No	No	?	No	?	No	No	No	No	No	No	No	?	?	No	No	Yes	No	No	?	Yes	?	?	No	No	Yes	?	?	?	?	No	No	No	No	No	No	No	No	?	?	No	No	?	?	No	No	No		4
gssapi-with-mic	RFC 4462	Yes	Yes	Yes	Yes	No	No	No	No	No	No	?	Yes	?	Yes	Yes	No	Yes	No	No	Yes	?	?	No	Yes	Yes	No	No	?	Yes	?	?	No	No	Yes	?	?	?	?	Yes	No	No	Yes	No	Yes	No	No	?	?	No	No	?	?	No	No	Yes		17
hostbased	RFC 4252	Yes	Yes	Yes	No	No	No	No	No	No	No	?	No	?	No	No	Yes	Yes	Yes	Yes	Yes	?	?	Yes	Yes	No	No	No	?	No	?	?	Yes	No	No	?	?	?	?	Yes	Yes	Yes	Yes	Yes	Yes	Yes	No	?	?	No	No	?	?	No	No	No		18
keyboard-interactive	RFC 4256	Yes	Yes	Yes	Yes	Yes	Yes	No	Yes	Yes	Yes	?	Yes	?	Yes	Yes	Yes	Yes	Yes	Yes	Yes	?	?	Yes	Yes	Yes	Yes	Yes	?	Yes	?	?	Yes	Yes	Yes	?	?	?	?	Yes	Yes	Yes	Yes	No	Yes	Yes	No	?	?	Yes	Yes	?	?	Yes	Yes	Yes		37
password	RFC 4252	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	?	Yes	?	Yes	Yes	Yes	Yes	Yes	Yes	Yes	?	?	Yes	Yes	Yes	Yes	Yes	?	Yes	?	?	Yes	No	Yes	?	?	?	?	Yes	Yes	Yes	Yes	Yes	Yes	Yes	No	?	?	Yes	Yes	?	?	Yes	Yes	Yes		38
publickey	RFC 4252	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	?	Yes	?	Yes	Yes	Yes	Yes	Yes	Yes	Yes	?	?	Yes	Yes	Yes	Yes	Yes	?	Yes	?	?	Yes	Yes	Yes	?	?	?	?	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	?	?	Yes	Yes	?	?	Yes	Yes	Yes		40
publickey-hostbound-v00@openssh.com	OpenSSH	No	Yes	No	No	No	No	No	No	No	No	?	No	?	No	No	No	No	No	No	No	?	?	No	Yes	No	No	No	?	No	?	?	No	No	No	?	?	?	?	No	No	No	No	No	No	No	No	?	?	No	No	?	?	No	No	No		2