Trimble Connect - Trimble Connect is a collaboration tool specially designed for Architecture, Engineering and Construction professionals such as architect, sub-contractors and project owners.
EcoDomus - EcoDomus is an all-in-one Building Information Management (BIM) software solution that offers lots of building improvement tools for real estate owners and tenants.
Godot Engine - Feature-packed 2D and 3D open source game engine.
Tekla Structures BIM Software - Open approach to Building Information Modeling
Blender - Blender is the open source, cross platform suite of tools for 3D creation.
LibreCAD - An open source 2D CAD application for Windows, Apple and Linux.