Zeplin is a development tool which increases collabration between developers and designers. I personally admire that product and you can learn more about it from here
Topic of Hackathon:
The main topic of Hackathon was super heroes. We were asked to develop a system that will increase efficiency of remaining of Heroes since Thanos erased most of them.
What We Done :
We won the Jury Special Award because of our ententhusiasm and speed to learn a new language and framework.