OpenFest is the biggest annual Bulgarian conference dedicated to open-source technologies. This edition of the event took place at Interpred Business Center Sofia on 2nd and 3rd November. OpenFest is a free event and couple thousand people visited it. As usual the schedule was busy and talks on variety of open-source topics were simultaneously held at three different halls. This year discussions about Tizen and Firefox OS made a debut on the stage of OpenFest. Another attraction was the open-source hardware hackathon organized by Olimex where a hundred lucky enthusiasts were able to get free OLIMEXINO-85 kits and to solder Arduino on their own.