I've used Dashlane and LastPass in the past, and currently use 1Password. We pay for 1Password, I think it's like $50/year, but it's worth it for ease of use and integration with devices.

I've been using LastPass free for years.

It's not the easiest thing to set-up properly, but the add-on for Firefox is pretty good.  Auto-login can be hit-and-miss, so I set-up a shortcut (alt-p) to auto fill my ID and password.  I let my browser remember the password so it automatically signs into Lastpass when I launch my browser.

Just make sure you write your master password down somewhere.  I've lost it, and if you don't have a cookie saved in your browser you won't be able to recover and have to start all over (and reset all your passwords to the websites you've forgotten).