Procore - Procore is the world's most widely used construction project management software. Easy to use, mobile platform with unlimited user licenses.
FreeCAD - An open-source parametric 3D modeler
Corecon - Corecon offers integrated estimating, project management, and job costing for small to medium-sized construction companies.
POSIM Retail POS - Point of sale and inventory management for retailers
SummitVista.io - Summit Vista end to end short and long term property management
CoConstruct - CoConstruct's project management software helps custom builders & remodelers coordinate projects, communicate with clients & crew, and control.