I personally use 1Password.
Alternatives:
​LassPass​
​DashLane​
​Apple's iCloud KeyChain​
​The WireCutter: The Best Password Manager​
Can store other secure information (Credit Card numbers, SSNs, WiFi Routers).
Dislikes:
Subscription Service
I dislike the desktop support. Only works in Safari. I only use it to store hotspot passwords.
Test wether your data has been compromised, and sign up for alerts.