Hobgoblin 3D
Modeler / Company Name
Short Description
Hobgoblin-3D LTD aims to deliver high quality, affordable 3D print blueprints for the table top games market.
Website
Vault Network (DriveThru RPG, RPG Vault, Wargame Vault, etc)
Pinshape Profile
Masterwork Tools
Modeler / Company Name
Short Description
Masterwork Tools was founded by Devon Jones. Evan Carothers (EC3D) also releases items through it. His biggest claim to fame, is the incredible Open Forge set of terrain. These are fully free (from Thingiverse) dungeon tiles. They are Openlock compatible and the bases even have spots to put in bucky ball type magnets to hold them together. (Personally, I use these bases, and scale them up to wylock scale).

Beyond the Open Forge tiles, he has all kinds of other terrain pieces as well.
Thingiverse Profile
Mean Gummy Lizard Production
Modeler / Company Name
Short Description
Their latest kickstarter features a number of desert dwellings in 28 - 32mm format.
Omegames Miniatures
Modeler / Company Name
Short Description
Omegames creates fantasy terrain - both STL files and physical versions.
RPG Tools, LLC / Kevin Rau
Modeler / Company Name
Short Description
Maker of a wide assortment of 3D models for fantasy games.
Stone Skull Studios
Modeler / Company Name
Short Description
Stone Skull Studios was officially established in January 2016 after its first successful Kickstarter campaign that same month. What began as small project to create gaming miniatures and supplements, has now grown to be one of the best miniature producers in the world.