42 Computer programing; computer services, namely, hosting and maintaining an on-line website for others to work collaboratively developing software; hosting and maintaining a system on an on-line platform for accessing and contributing to the development of computational platforms, networking protocols, acoustic signal modulation formats and frequency ranges, analog electronics, signal transmissions, and detection, processing and classification of signals; hosting and maintaining and on-line platform for downloading, uploading and developing software tools used in the development, maintenance and operation of underwater communication systems, and the modeling of environmental and system performance, both on-line and off-line; hosting and maintaining an on-line platform for the dissemination and development of new techniques, processes, and procedures related to undersea acoustic communications technology use by the commercial and defense industries; design and development of computer software; hosting of digital content; platform as a service (PaaS) for the development and sharing of computer software; platform as a service (PaaS) for the development and sharing of communication systems software both on-line and off-line