These four are widely used engineering software tools, but they serve different purposes in the design and simulation process. 🧰 1. AutoCAD Purpose: 2D drafting & basic 3D modeling Developer: Autodesk Best For: Architects, civil engineers, electrical/mechanical layouts 🛠️ 2. SolidWorks Purpose: 3D parametric modeling & basic simulation Developer: Dassault Systèmes Best For: Mechanical design, product development, assemblies ✈️ 3. CATIA Purpose: Advanced 3D modeling for complex systems Developer: Dassault Systèmes Best For: Aerospace, automotive, complex surface modeling 🧪 4. ANSYS Purpose: Engineering simulation (CAE) Developer: Ansys Inc. Best For: Advanced FEA, CFD, multiphysics simulation