They seem to have left it off the main download page. Whoops. In case users want to use their own vault.
1Password Version: Not ProvidedExtension Version: Not ProvidedOS Version: Not ProvidedSync Type: Not Provided
Thanks for writing in.
It is still available at the same place for the past decade: https://agilebits.com/downloads
And it is also mentioned below the big blue button on the 1Password.com here: https://1Password.com/downloads/
Note the domain, all standalone products are on the AgileBits.com while all 1Password.com products are on 1Password.com.