SimplyPrint uses OctoPrint; similarities
SimplyPrint and OctoPrint share many of the same features in terms of control, video surveillance, and start/stop of 3D prints. But SimplyPrint takes it a few steps further. Much of the inspiration for SimplyPrint actually comes from, and wouldn't be possible without, OctoPrint, and we use OctoPrint to communicate with your 3D printer.
OctoPrint and SimplyPrint are trying to accomplish two very different things; we make 3D printing an all-in-one solution, with a lot of features, user-friendly design and access to your printer wherever you are. OctoPrint's main focus is communication with your printer, and does not focus very much on design, availability or lots of features.