Tatska Corporation
Tatska Corp is the dominant business on Calderia. A multi-purpose company, they are known to purchase, cannibalize and absorb almost any business they can. Often acts of corporate crime is directly traced back to the company, as is local planetary government corruption. It is well know that Tatska even owns some senators, but this is not publicly acknowledged.
Tatska provides everything from firearms to medical supplies and body augmentations. If its on or comes from Calderia, it's courtesy of Tatska.
Kilo8 Industries
The home company of Solstice, Kilo8 fixes itself to a more industrial style of design. Primarily a manufacturer or ships and firearms, their designs are praised as durable and rugged, though often critiqued for their 'lack of sophistication'. Products from Kilo8 often make up for their lack of looks with quality and a long life.
Barton Limited
Barton LTD is exclusively a firearms manufacturer based on a space station orbiting Calderia. Specializing in experimental firearms, the more exotic or daring designs are usually products of this company. Pieces from Barton LTD are rare, but not unheard of in places like the frontiers of Solstice.