TurboSquid - TurboSquid is one of the leading marketplaces for high-quality 3D designs. Artists can upload and sell their work. A unique feature of TurboSquid is its quality control, dubbed “CheckMate.” It consists of objective requirements to evaluate the quality of the 3D model (scale, clean UVs, texture resolution specified). TurboSquid also features many free 3D models to download.
Search Google with "mz4250" and the mini name ie. mz4250 orc. (https://www.patreon.com/mz4250 )
Cura - 3D printing software
Slic3r - 3D printing software
OctoPrint - The snappy web interface for your 3D printer
Meshmixer - Do you need to clean up a 3D scan, do some 3D printing, or design an object that fits something else? Meshmixer can help. Think of it as a sort of "Swiss Army Knife" for 3D meshes.
Microsoft 3D Builder - Edit and repair 3D models
TinkerCAD - Very user friendly 3D model software for beginners
Blender - 3D model software
Sculptris - If you're new to the world of digital sculpting, Sculptris is the ideal ground on which to get started.
Sketchup - 3D modeling software
OpenSCAD - The Programmers Solid 3D CAD Modeller
FreeCAD - is an open-source parametric 3D modeler made primarily to design real-life objects of any size. Parametric modeling allows you to easily modify your design by going back into your model history and changing its parameters.
Getting Better 3D Prints: Preparing & Slicing 3D Models (Miniatures & Terrain)
3D Printing - 13 Things I Wish I Knew When I Got Started
How to Copy (almost) Any Object
https://all3dp.com/1/best-photogrammetry-software/#section-free-photogrammetry-software
How to print maps, terrains and landscapes on a 3D printer