Using a password safe can make the life much easier. You can store your passwords encrypted for each service and if you need a new password, there is a password generator included as well.
To have the same password safe on all Linux/Mac/BSD machines you can use KeePass. It is a mono based software. O.k is not sexy but does its job quite well.
Install dependencies for KeePass on FreeBSD 10.1
pkg install mono libgdiplus
Download the KeePass portable version!
After you extracted KeePass to the place you want, run it with mono:
or use your file browser to execute the KeePass.exe file with mono. This works for me with dolphin in KDE.
Hope this helps to make your life easier with managing passwords.
One bad thing is that KeeFox seems not to be working on FreeBSD, yet. KeeFox is a nice integration into your Firefox browser to automatically fill forms with the stored password for that site. I didn't investigate maybe you have some time to find an alternative or make it work on FreeBSD.