I have begun to use a free product named Keepass.
I recommend it to everyone.
We have lots of passwords now.
It is very risky to get the same passwords and same user IDs.
And it is difficult to remember the passwords if we get different ones.
Writing them to somewhere is also risky because other people can see (or steal).
And Keepass hides all the passwords you have by encrpting them.
When needed, you can use your passwords by copying them with ctrl + C shortcut.