SketchUp - 3D for Everyone
Procore - Procore is the world's most widely used construction project management software. Easy to use, mobile platform with unlimited user licenses.
LibreCAD - An open source 2D CAD application for Windows, Apple and Linux.
PlanSwift - PlanSwift allows contractors to create accurate project estimates specific to their individual trade.
DraftSight - Discover Dassault Systèmes®' DRAFTSIGHT™ Professional CAD software that lets you create, edit, view and markup any kind of 2D drawing. Learn more here.
SharpeSoft Estimator - SharpeSoft Estimator is a fast and high-performance solution that enables you to bid on more work in minimal time.