The Hecate-class is a derivative of the Janus-class, produced on an as-requested basis.  Unlike the stock Janus-class, which removed the original Janus's fourth deck, the Hecate-class retains the fourth deck as room for after-market modifications.  Beyond this, the major difference between the Hecate-class and the Janus-class is that the Hecate-class has a radically different layout on the upper deck.  Numerous systems that are in the upper deck on the Janus-class are instead located in the lower (fourth) deck, and the space they would have occupied is instead configured as a single-craft hangar bay, capable of holding 1 vessel of up to Gargantuan size.  The Hecate class is easily distinguished from the Janus-class due to the addition of two vertical control surfaces which aid in the maneuvering of the vessel when in an atmosphere, in addition to the overall larger profile of the vehicle.

The Hermes class is an outgrowth of the Janus-class Runabouts, albeit one missing the entire middeck.  The Higgs Drives and power systems are top of the line, and extended to take up almost the entirety of the lower deck.  The remaining 1/4 of the lower deck now holds the Pilot/Engineer's quarters.  The Stover Drive systems are also upgraded, now extending two thirds of the way towards the cockpit on the upper deck.  The remaining third of the distance is a cargo hold, capable of being converted to a single-person passenger quarter if needed.  Between this hold and the cockpit are the wirehead's quarters, the wirehead interface tank, and a small galley. There is no lift system on the Hermes-class, only a series of ladders.

The Janus-class Runabout is based off of the design used for the Janus, the civilian experimental testbed craft used to test many of the systems now commonplace on Terran Alliance spaceships. Potentially lightly armed, moderately armored, and with a triple-deck design, it was intended for use for a range of military applications, but it also sees use in the private sector as a private yacht or transport vessel. More than a few Janus-class Runabouts have been sold for civilian use, but for the most part those that are sold off are sold disarmed aside from an AI-Controlled Pulse Laser Array for self-defense purposes - obtaining and maintaining a weapons load-out permit is a very difficult chore.

Pizzuto Industries has been releasing new models of personal interplanetary spacecraft under its PS-Series line since late 2020. These are representative of the 'middle of the road' class of civilian personal spacecraft, able to travel farther than an in-system shuttle (which usually lacks the capability to travel from planet to planet), but still being unable to travel at FTL speeds under their own power. Commonly used by bounty hunters, wealthy corporate managers, and celebrities, these craft are a common sight at civilian spaceports across the Terran Alliance.

The logical evolution of the concepts developed by the Interplanetary Shuttle, the Wayfarer-class medium transport occupies the space between the Courier and Runabout classes, and the large interstellar freighters such as the Leviathan and Praetor-classes. Of course, the design has been altered from the truss-based framework of the Interplanetary Shuttle to one that can withstand FTL flight. Payload modules can be attached and detached from the vessel as needed. This modular design enables a Wayfarer to load a passenger section, hangar module, or cargo module, depending on what is needed at the time. A Wayfarer features powerful engines that give the vessel surprisingly good speed, which led to its adoption as the standard private-sector interstellar shipping vessel.