“…The literature shows that there are several crowdsourcing platforms that are especially designed for crowdsourcing RE tasks. CrowdREquire [35], REfine [23], CRUISE [5], UCFrame [36], Requirements Bazaar [37], GARUSO [20], CREeLS [38], CREUS [39], SCOUT [40], Liquid RE [41], KMar-Crowd [29], Srivastava and Sharma's platform [4], Seyff et al's platform [31], Nagel et al, prototype [42], smartFEEDBACK [43], CrowdConfigRE [44] and Menkveld et al's platform [45] are all crowdsourcing platforms for RE.…”