ModernKeePass is free, open-source and user friendly yet secure password manager, based on proven and certified technology from KeePass 2.x and fully compatible with it.
You can safely store all your passwords in an encrypted, secure database that you can store anywhere (local, cloud, USB key...)

Even though security is an important matter, this app aims at being simple to use. Suggestions welcome!
Works in Windows 10, 8.1 and RT.