SecurePassG creates more secure passwords. It is based on what I understand about password criteria needed to thwart most password guessing software. When saving or writing down a password, you may want to encrypt it using an encryption software like Encrypto available under my profile. When saving your password, you choose the extension you want to use, .txt should be fine.
In addition to the original Java version, there is also a Windows .exe version written in C# that currently doesn't...