Every year the third Saturday in the month of September celebrated Software Freedom Day (SFD) around the world. The day was celebrated in existence for the past few years .

It was held by the Free SFD last 21 September. This year SFD 2013 celebrate Open Knowledge Foundation Network Bangladesh (OKFnBD). After that a Seminar held about Open Source, Open Knowledge. This program supported by Bangladesh Open Source Network (BdOSN). On this program the cake is cut at FRIPED auditorium. After that the philosophy of free software are discussed by Munir Hasan, General secretary of BdOSN. In this program Enayet Hossain Rajib, Asst. General Secretary of BdOSN, Nasir Khan Saikat, Administrator of Bengali Wikipedia, Baizid Bhyiyan Juwel, Coordinator of Bangladesh Mathematical Olympiad Committee, Badol Khan, IT Journalist, Kawsar Uddin, Executive Member of Bangladesh ICT Journalist Forum, Promi Naheed, Program Coordinator of BdOSN, Rahitul Islam Ruwel, Member Volunteer of OKFnBD also presesnt.