https://www.openfest.org/2015/en/2015/11/05/thank-you-e-card/ OpenFest is the only conference of its kind in Bulgaria, dedicated to open culture, free and open-source software, the free exchange of knowledge - a festival of the open culture. Thu, 05 Nov 2015 07:54:39 +0000 hourly 1 https://wordpress.org/?v=5.2.20