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LastPass is a freemium cloud-based password management service.
Works on Windows/OSX/Linux, Android/iOS/WP/BlackBerry, Chrome/Firefox/Opera/Safari/IE.
SpecsUpdate
Pros
Pro Seamless autofill and password generator via plugins for all popular browsers
All common browsers, including Opera, have plugins that allow automatically filling in forms and generating passwords. All form fill information syncs across all platforms, devices and browsers. Password generator can be adjusted to use or exclude certain characters and patterns.
Pro Allows downloading an encrypted database backup that can only be decrypted with LastPass Pocket
LastPass Pocket is a standalone personal database decrypter. It's a portable executable, meaning it does not need to be installed, that is used to decrypt a local encrypted copy of the password database.
Pro Offers multiple export options
LastPass can dump the whole database as a .csv file or an encrypted file that can then be decrypted using LastPass Pocket as well as separately export Wi-Fi passwords and autofill information. Additional export options are available on a per-browser basis.
Pro Works with portable versions of Chrome and Firefox
Firefox 2+ on Windows, Mac & Linux as well as Chrome 4+ on Windows and Linux support a portable version of LastPass. Great for securely accessing LastPass Vault from public or untrusted computers.
Pro Multifactor authentication
LastPass offers multiple multifactor authentication options, including Google Authenticator, Grid Multifactor Authentication, Microsoft Authenticator App, Toopher Authentication, Duo Security Authentication, Transakt Authentication, Sesame Multifactor Authentication, Smart Card Authentication and Yubikey Multifactor Authentication.
Cons
Con One sided changes in plans/tarifs = you are hostage/prisoner
Used their free plan as it has enough features for me on both mobile and PC. But they changed the plan and combo is no longer available and forces you to either abandon one platform, or pay monthly fee.
I'm fine to pay for service, but I would rater see donate or one payment for storage I can have under my control. Taking me hostage asking for "protection money" is big warning for me. What will be next , extra $4 for every 100th use or use of number 9 in passwords ?
Con Saves in the cloud which not everyone likes and limits off-line use
It is nice to believe you have safe in safe place like their cloud. But you have zero control over the access to that and more importantly, if you happen to be out of data coverage on a trip with limited roaming data it's practically impossible to open app on iOS and get to PINs/passwords. That's a big issue.