Knox has been a great program and I would be happy to pay for the newer versions. I would also ask the 1 Password team to continue the Knox development.
@eurasian: It isn't something we have any plans for right now, but thanks for the kind words, and for sharing your love for Knox with us.
If we're able to bring Knox development back in the future we definitely will, and if we aren't we won't, but I don't want people getting false hope that posting a +1 here will necessarily affect what we are able to do in this regard, so I'm going to lock this thread for now. Thank you for your feedback, everyone.