FreeCAD - An open-source parametric 3D modeler
DonorSnap - DonorSnap is a donor management and fundraising software.
SketchUp - 3D for Everyone
DonorPerfect - Nonprofits use DonorPerfect Fundraising Software for their Donor Management, Grant & Gift Tracking, Moves Management, Mass Mailing needs and more.
LibreCAD - An open source 2D CAD application for Windows, Apple and Linux.
NetSuite for Nonprofits - NetSuite for Nonprofits is a cloud-based donor management system for your nonprofit or social organization.