I realize you're the only person who is technically a "judge" however these are the top 3 projects from the hackathon in my opinion:

1. https://peakd.com/hive-139531/@emrebeyler/introducing-anonramblings-https-github-com-emre-anonramblings

2. https://peakd.com/hackathon/@rishi556/hive-hackathon-introducing-raven

3. https://peakd.com/hackathon/@cadawg/hive-hackathon-well-errr-it-s-a-couple-of-pages-or-hive-uno

Overall great initiative and I'm glad to see a handful of developers went ahead and made something. Thought about entering the hackathon personally but realized that the time-frame to develop wasn't something I should strive for.

Either way, interesting hackathon. I'd suggest running one of these every month or every other month in order to stimulate the developer ecosystem.