This chapter provides a detailed systematic overview of the operational rules of seven prominent standards development organizations, each having a different institutional background and developing different types of ICT standards, namely: ITU; ETSI; 3GPP; IEEE; IETF; W3C; and Bluetooth SIG. Building on the previous chapter, it examines these organizations’ standards development procedures, which it divides into three stages: proposal of standardization projects, rules on contributing and voting at the meetings of technical committees, and approval of standards. It then offers comparative observations to the extent that the different institutional settings of these organizations allow.