I keep hearing about the wonder that is Devonthink, with its ability to collect materials from all over the place, and, more importantly, its AI that lets it make novel connections between things. I don't have a Mac, so, what are some alternatives for Windows or Linux, or in the cloud? I use Evernote for some things, and I like it, but it lacks the algorithm that Devonthink boasts. I have heard OneNote suggested as an alternative, but I think it has the same limitation.
-edit: I originally posted this as a question about Omnifocus, but I meant to say Devonthink. Must be the cold meds.