1Password uses AES-256 encryption but stores all your data locally on your computer. Even if you choose to synchronize your data with other devices, your master password, the unique decryption key, never leaves your computer or device. Decryption is always done locally and the decrypted data is never written on the disk.
With 1Password, using the cloud is an option, not a requirement. The software lets you synchronize data between devices via iCloud and Dropbox, or locally through Wifi. It’s an ideal solution for mobile users who are more cautious about the cloud.
Integration with browsers
1Password is compatible with Chrome, Firefox, Opera, and Safari. Extensions allow the app to automatically save new passwords entered in the browser and to automatically fill out forms with just one click.
The Watchtower feature in 1Password identifies sites that are vulnerable to cyber attacks and tells you which passwords you should change. The app will tell you which sites to avoid, and gives you the green light to change your password after covering security holes.
Another good feature is that 1Password will also tell you if your passwords aren’t safe enough, are duplicate, or are obsolete so that you can update them.
1Password is available for: Android | iOS | Mac | Windows | Windows Phone