The aim of this vbs script is to launch putty using an URL like ssh://login@host directly from a browser. The .bat is almost the same than .vbs but less robust and just their for older systems.

putty.bat

:: This version is not as powerfull as vbs version, please prefere the other one.
:: It's just there if you need a non-visual basic way to perform this.
:: Restrictions:
::   - Password cannot contain a % or finish with @
::   - Chrome adds a / at the end of the URL, not yet managed

:: The aim of this script is to execute putty with parameters like ssh://login@host 
:: Installation:
::   - Launch putty.reg to associate ssh:// and telnet:// to this script
::   - Edit the putty path in parameter below like puttyPath="C:\Program Files (x86)\putty.exe"
::   - Save this .bat on your PC like c:\putty.bat (or change the path in putty.reg)
:: Uninstallation:
::   - Run unputty.reg
:: Script created by Sebastien Biffi
:: Version 2014-04-17

@echo off
setlocal enableDelayedExpansion

set puttyPath="C:\Program Files (x86)\putty.exe"

set params=%1
rem set params=ssh://root:[email protected]:22
rem set params=telnet://172.25.41.2

:: checks the parameters and exists if nok
if "%params%"=="" (
	echo [Warning] Empty parameter
	goto usage
)
echo URL:           %params%

:: finds protocol in URL and removes it form the rest
set URL=%params%
for /f "tokens=1* delims=/" %%a in ("%URL%") do (
	set uProtocol=%%a
	set uParams=%%b
)
:: remove ending : from protocol: expression
for /f "delims=:" %%a in ("%uProtocol%") do (
	set uProtocol=%%a
)
if "%uParams%"=="" (
	echo [Warning] Protocol or host has not been specified and are not optional
	goto usage
)

:: split URL (except protocol) in authentication and host:port blocks
set uAuthent=
set uParamsRest=%uParams%
:loopParamsArobas
for /f "tokens=1* delims=@" %%a in ("%uParamsRest%") do (
	if "%uAuthent%"=="" (
		set uAuthent=%%a
	) else (
		set uAuthent=%uAuthent%@%%a
	)
	Echo %%b | findstr /C:"@">nul && (
		set uParamsRest=%%b
		goto loopParamsArobas
	) || (
		set uHostPort=%%b
	)
)
if "%uHostPort%"=="" (
	set uHostPort=%uAuthent%
	set uAuthent=
)
:: remove possible / from protocol: expression
for /f "delims=/" %%a in ("%uHostPort%") do (
	set uHostPort=%%a
)

:: split login:password in login & password
for /f "tokens=1* delims=:" %%a in ("%uAuthent%") do (
	set uLogin=%%a
	set uPwd=%%b
)

:: split host:port in host & port
for /f "tokens=1,2 delims=:" %%a in ("%uHostPort%") do (
	set uHost=%%a
	set uPort=%%b
)

echo   protocol:    %uProtocol%
:: echo   params:      %uParams%
:: echo   authent:     %uAuthent%
echo   login:       %uLogin%
echo   password:    %uPwd%
:: echo   host:prot:   %uHostPort%
echo   host:        %uHost%
echo   port:        %uPort%

:: check parameters and create putty execution
if "%uProtocol%"=="telnet" set pProtocol= -telnet
if "%uProtocol%"=="ssh" set pProtocol= -ssh
if "%pProtocol%"=="" (
	echo [Warning] protocol not reckognized:%uProtocol%
	goto usage
)
if "%uHost%"=="" (
	echo [Warning] host cannot be null
	goto usage
)
set pHost= %uHost%
if not "%uLogin%"=="" set pLogin= -l %uLogin%
if not "%uPwd%"=="" set pPwd= -pw %uPwd%
if not "%uPort%"=="" set pPort= -P %uPort%
set puttyCommand=%puttyPath%%pProtocol%%pHost%%pLogin%%pPwd%%pPort%
echo puttyCommand:   %puttyCommand%
start "" %puttyCommand%
echo done
rem pause
exit 0
rem goto :EOF

:: display the help of this batch script
:usage
echo Usage: %~nx0 URL
echo     for example: %~nx0 ssh://login:pwd@host:port
echo                  %~nx0 telnet://login@host
echo                  %~nx0 telnet://host
echo;
echo The URL must be fully qualified, including the ssh:// or telnet://
pause
goto :EOF

putty.reg

Windows Registry Editor Version 5.00

[-HKEY_CLASSES_ROOT\ssh]
[-HKEY_CLASSES_ROOT\telnet]

[HKEY_CLASSES_ROOT\ssh]
@="URL:PuTTY SSH Protocol"
"EditFlags"=dword:00000002
"FriendlyTypeName"="@ieframe.dll,-907"
"URL Protocol"=""
"BrowserFlags"=dword:00000008

[HKEY_CLASSES_ROOT\ssh\DefaultIcon]
@="C:\\Program Files (x86)\\putty.exe,0"

[HKEY_CLASSES_ROOT\ssh\shell]
@=""

[HKEY_CLASSES_ROOT\ssh\shell\open]

[HKEY_CLASSES_ROOT\ssh\shell\open\command]
@="wscript.exe C:\\putty.vbs %1"

[HKEY_CLASSES_ROOT\telnet]
@="URL:PuTTY telnet Protocol"
"EditFlags"=dword:00000002
"FriendlyTypeName"="@ieframe.dll,-907"
"URL Protocol"=""
"BrowserFlags"=dword:00000008

[HKEY_CLASSES_ROOT\telnet\DefaultIcon]
@="C:\\Program Files (x86)\\putty.exe,0"

[HKEY_CLASSES_ROOT\telnet\shell]
@=""

[HKEY_CLASSES_ROOT\telnet\shell\open]

[HKEY_CLASSES_ROOT\telnet\shell\open\command]
@="wscript.exe C:\\putty.vbs %1"

putty.vbs

' The aim of this script is to execute putty with parameters like ssh://login@host directly using an URL in a browser
' Installation:
'   - Launch putty.reg to associate ssh:// and telnet:// to this script
'   - Edit the putty path in parameter below like puttyPath = "C:\Program Files (x86)\putty.exe"
'   - Save this .vbs on your PC like c:\putty.vbs (or change the path in putty.reg)
' Uninstallation:
'   - Run unputty.reg
' Version 2014-04-23'
' Script Created by Sebastien Biffi

puttyPath = "C:\Program Files (x86)\putty.exe"

On Error Resume Next
' initialisation of variables
logResult = "" ' Used for logging purpose during debug or in case of error. Log is a msgBox
logIcon = 0 ' Icon of the MsgBox. By default: none
logTitle = "" ' Title of the MsgBox. By default: none

Set re = New RegExp
' The pattern that matches the URL. Used to check the URL format provided and find fields in it.
re.Pattern = "^([^:]+)://(([^:]+)(:(.*))?@)?(([^/@:]+)(:([0-9]+))?)/?$"

' Check if only 1 parameter is passed to the script, else throw an error
if Wscript.Arguments.Count = 1 then
	url = Wscript.Arguments(0)
else
	exitWithError("Please pass only 1 parameter to this script like:" & vbCrLf & "   - ssh://login:password@host:port " & vbCrLf & "   - telnet://login@host:port" & vbCrLf & "login, password & port are optional")
end if

' Check if the URL is valid, else throw an error
If re.Test(url) Then
	log("URL is valid: " & url)
Else
	exitWithError(url & " is NOT a valid URL" & vbCrLf & "Please pass only 1 parameter to this script like:" & vbCrLf & "   - ssh://login:password@host:port " & vbCrLf & "   - telnet://login@host:port" & vbCrLf & "login, password & port are optional")
End If

' Find the putty parameters in the URL
Set Matches = re.Execute(url)
protocol = Matches.Item(0).Submatches(0)
login = Matches.Item(0).Submatches(2)
pwd = Matches.Item(0).Submatches(4)
host = Matches.Item(0).Submatches(6)
port = Matches.Item(0).Submatches(8)
log("  host: " & host)
log("  protocol: " & protocol)
log("  port: " & port)
log("  login: " & login)
log("  pwd: " & pwd)

if protocol = "ssh" then 
	paramProtocol = " -ssh"
elseif protocol = "telnet" then
	paramProtocol = " -telnet"
else
	exitWithError("Protocol: " & protocol & " is not a valid protocol (ssh or telnet).")
end if 
if host <> "" then 
	paramHost = " " & host
else
	exitWithError("Host cannot bu null.")
end if 
if login <> "" then 
	paramLogin = " -l " & login
end if
if (pwd <> "") and (protocol <> "telnet") then 
	paramPwd = " -pw " & pwd
end if
if port <> "" then 
	paramPort = " -P " & port
end if

' build the putty command like:
' putty.exe -ssh host -l login -pw password -P port
' putty.exe -telnet host -l login -P port
puttyCommand = chr(34) & puttyPath & chr(34) & paramProtocol & paramHost & paramLogin & paramPwd & paramPort
log (puttyCommand)

' For debugging purpose, uncomment following line:
'outputLog()

' Execute putty
Set objShell = CreateObject("WScript.Shell")
objShell.Run puttyCommand,1,False

' ****************
'   Error Output
' ****************
' Outputs a msgBox including the log and the error message
function exitWithError(str)	
	log(str)
  logIcon = vbCritical
	logTitle = "Error"
	outputLog()	
	wscript.Quit
end function

' ***********
'   Logging 
' ***********
' Adds a message to the log String
function log(str)
	if logResult = "" then 
		logResult = str
	else
		logResult = logResult & vbCrLf & str
	end if
end function
' Outputs a msgBox including the log String
function outputLog()
	if logResult <> "" then
		MsgBox logResult, logIcon, logTitle
	end if
end function

Fix to chrome / bug in the bat file, set params=!params:~0,-1!

I improved on @sbiffi 's script with support for 1Password-Login-URLs:
https://gist.github.com/kmpoppe/52ff04186f52e20078f66da7e4d9ff6b

Hope this is of use to anyone.

Hi experts nice to see , I am beginner , I want to use SSH protocol by application SecureCRT (which has more option compare to putty) , I badly needed this , Using windows 10 ... Many thanks in advanced