3D Design / Modeling
Free 3D Tools
Interior Design 3D
AMS Software
Interior Design 3D is an expert program for home design and floor plan creation.
Blender
Blender Foundation
Blender is the free and open source 3D creation suite. It supports the entirety of the 3D pipeline—modeling, rigging, animation, simulation, rendering, compositing and motion tracking, video editing and 2D animation pipeline.
MeshLab
Paolo Cignoni - VCG - ISTI - CNR
MeshLab is an open source, portable, and extensible system for the processing and editing of unstructured large 3D triangular meshes. It is aimed to help the processing of the typical not-so-small unstructured models arising in 3D scanning, providing a set of tools for editing, cleaning, healing, inspecting, rendering and converting this kind of meshes.