Tachyons

Tachyon (pronounced TAK-ee-on) is the broad name for faster-than-light subatomic particles. Due to their lack of a speed limit, all FTL technology is based upon spontaneously elevating matter into a tachyonic state (tachy matter). Tachyonic hyperspace is believed to be the primary factor in the start of the Prima Galactic Civil War.

Applications
Because of its FTL properties, Tachyonic technology is used in many applications.

Hyperspace
The best known use is hyperspace, using a process called Tachyonic/Tau Shifting. This works (in summary) by the hyperdrive generating an energy field until it reaches the Hyden Threshold, which varies depending on the mass being converted, at which point the initial charge is released, converting all the matter in its field, after which point a weaker field maintains the tachyonic state. This process is seamless, as the Tau field is faster than the speed of information by several hundred million times, meaning nothing is felt as the shift occurs.

FTL Communication
Hyperwave communication is arguably the most important technology of the modern age. It allows communication between any two points, with any bandwidth, within the universe. The connection is several times faster than conventional hyperspace, but still is not real-time over very long distance. For inter-filament real-time communication, quantum entanglement is used. Hyperwaves require rather large amounts of energy, resulting in the use of slower, shorter range warpcom as the shorter-range communication standard, as its slower speed is still satisfactory at shorter ranges.