AgileBits has released some screenshots depicting the upcoming 1Password 4 for Mac, its powerful password manager which will begin to feel some threat when OS X Mavericks ships with the built-in iCloud Keychain.
The password manager and form filler app is getting a lot of new features and enhancements, such as a browser extension that is written in Cocoa and looks and works the same in every browser, iCloud sync, multi-site login, favorites, more Custom Fields functionality, etc.
1Password 4 will be a free upgrade for everyone who bought the software in the Mac App Store, as well as for those who purchased an earlier version after January 1, 2013.
1Password requires OS X 10.7 (Lion) or later and a 64-bit processor. A screenshot gallery featuring 1Password 4 for Mac (courtesy of 9to5mac) can be found below.