For Windows, there is "1Password for Windows" and 1Password 4. I've never used the "for Windows" version, but I believe it's cloud only. 1Password 4 allows local vaults. However 1Password 4 is in maintenance mode and missing lots of nice features, like searching two vaults at once.
I have the Mac and the Windows licenses for 1Password. Windows 1Password 4 is a nightmare to use with its terrible UI and its buggy Chrome plugin integration.