“…Figure 2 summarizes the main article publication years for testbed facilities, as visible, there are no major trends in the evaluated 10 year period, except for the peak around 2015 and 2016 and following dip at 2017 and 2018, but after that, for two consecutive years, the publication of articles about new testbed facilities continues at a steady pace. Dandelion [24] 2019 NA Yes Indoor and outdoor DUTs, sub-GHz LoRa DUTs Open CLORO [25] 2019 NA No DUTs include moving robot, Android app for robot movement control FIST [26] 2012 NA No Wirelessly managed DUTs, the same radio channel for control and experimentation, tree topology City of Things [27] 2016 NA Yes Urban deployment, integrated big data analysis, includes wearables, data visualization AssIUT IoT [28] Update [29] 2018 4 No DUTs supporting LoRa, WiFi, ZigBee and Cellular communication, web interface TWECIS [30] Abstract [31] 2014 4 No GPIO event timestamping, support of gdb, network-wide power monitoring Rover [32] 2016 8 No Open source, cheap to implement Ocean-TUNE UCONN testbed [33] 2014 [41] 2011 27 Yes Mobile and static DUTs, a large variety of sensors, time synchronization, indoor positioning, robot movement control CaBIUs [42] 2020 30 No Custom designed programming language, web interface SDNWisebed [43] 2019 40 No SDN networking support, traffic statistics for DUTs I3ASensorBed [44] 2013 46 No Wide range of sensors, including CO2, presence, smoke, etc. OpenTestBed [45] 2019 80 Yes Fully open-source FlockLab [46] Demo [47] 2013 106 Yes GPIO tracing and actuation, power monitoring, time synchronization EDI TestBed [23] Updates [48][49][50][51] 2015 110 Yes GPIO interaction, power monitoring, ADC and DAC interaction, versatile deployment options, CLI RT Lab [52] 2015 115 Yes Indoor and outdoor DUTs, online code editing, parameterized control, digital multimeter for power monitoring Indriya [53] 2012 127 Yes Small maintenance costs, distributed in three floors NetEye [54] 2012 130 Yes Topology control, health monitoring, policy-based scheduling USN testbed…”