At the time of the Xindi crisis, Xindi technology was advanced compared with that of Starfleet. It could also be very different from any technology Humans had experience with. (ENT: "The Shipment") Each of the five remaining species had their own distinct technologies, as well as their own ship designs. Some of their technologies had been developed with the help of the highly advanced Sphere-Builders. Partly as a result of this alliance, many of their technologies were unique to the Xindi, including their subspace portals, and their fearsome planet-destroying capabilities.