20 YEARS OF DEVELOPMENT AND USE OF THE SWAD EDUCATIONAL PLATFORM Department of Computer Architecture and Technology, University of Granada (SPAIN) / OpenSWAD Association (SPAIN) SWAD is a free-software educational web platform to support face-to-face or blended learning swad.ugr.es January 2005 - February 2020 # lines of C code of swad-core from 1999 to 2020 Free-software · 9 languages · Android app · iOS app · Face- 465 million to-face or blended learning · Course information · Free software since 2010 Syllabus · Calendar · Documents · Shared files · Portfolio clicks (page views) · Grades · Assignments · Projects · Quizzes · Games swad-core SWADroid app · Surveys · Exam announcements · Groups · Lists of 373 25 66 1 million million million million Affero GPL v3 license GPL v3 license students and teachers · Attendance control using QR https://github.com/acanas/swad-core https://github.com/Amab/SWADroid codes · Social network · Forums · Notifications · Notices (80%) (5%) (14%) (<1%) students teachers others admins · Messaging system · Analytics · Agenda · Preferences 317,306 128 38,528 17,790 lines of C code MySQL tables lines of Java code downloads 82 person-years 9 person-years estimated effort* estimated effort* 190,815 $4,533,535 $491,496 users have logged in estimated cost* estimated cost* * according to COCOMO model in Open Hub 168,270 3,831 31,447 131 Other modules and more info: (88%) (2%) (16%) (<1%) students teachers guests admins https://openswad.org/source 1.9 20.8 million million sent messages received messages SWAD in the cloud, offered free of charge for any country February 2020 by the OpenSWAD Association Page views and unique users per week in SWAD-UGR from 2005 to 2020 146,714 current users 126,190 3,568 17,395 117 (86%) (2%) (12%) (<1%) students teachers guests admins from 1000 institutions Number of teachers and students who logged ❓ Number of teachers and students who logged 109,447 10,125 27,142 in SWAD-UGR from 2005 to 2020 (75%) (7%) (18%) from UGR from other institutions unknown 489 7,512 degrees courses Top countries in OpenSWAD according to the number of users from each country (Feb 2020) 747,188 (1.4 TB) number of users from each country (Feb 2020) files 35,172 21million test questions times answered 1,340 61,934 1,746 institutions ordered by number of users Number of degrees, courses, teachers and who claim to belong to them (Feb 2020) Number of degrees, courses, teachers and forums forum posts students in SWAD-UGR from 1999 to 2020.