Sticky Password automatically fills login and password fields in web forms and usual dialog windows. It has an unique feature named "Sticky Button" which appears on any window that had password saved for. Careful backup feature will keep all your passwords safely stored until you will need them. Also Sticky Password allows to have multiple logins and passwords for a single account and there are many other useful features.
A Premium version is available for $19.99 per year. It includes additional features such as cloud sync, cloud backup, local Wi-Fi sync, and support.