I&#x27;ve not used it myself but I believe LastPass is the most user friendly option. I have no tech family that use it and love it&#x27;s ease - not sure about OS X 10.6 support but certainly has windows and OSX support (<a href="https:&#x2F;&#x2F;lastpass.com&#x2F;misc_download2.php" rel="nofollow">https:&#x2F;&#x2F;lastpass.com&#x2F;misc_download2.php</a>).<p>I like KeePass2 which is open source but nothing like as smooth as LastPass (No browser integration on OSX and integration on firefox for windows works but isn&#x27;t perfect).