If by "safekeep" you mean keeping track and never forgetting about my passwords, then I am using a certain plug-in in Google Chrome named "Gumshoe".

Gumshoe is a simple plug-in which keep tracks of every username and password of every account that you log-in in any website. Gumshoe may also be used for hacking but I highly discourage the improper usage of it.

Gumshoe is a very user-friendly plug-in and it is not very complex to use and understand. I use gumshoe because I have been visiting many sites lately and I have the habit of using different passwords on my accounts so that if one of my accounts gets hacked, my other accounts won't be accessed.