Autodesk Revit

From Autodesk:

For projects large and small, complex and simple, architects and other building industry professionals around the world use Autodesk Revit today for building design, documentation, andincreasinglyconstruction and management. Why? Because it increases their productivity, improves project coordination, and helps them do their best possible work.

Requirements:

• Intel Pentium III or AMD Athlon-based PC, or better
• Microsoft Windows XP,Windows 2000, Windows Me,Windows 98, or Windows NT 4.0 (SP6 or later)
• 256 MB RAM for single-user projects; 512 MB RAM for multiuser projects
• 250 MB available disk space
• Internet connection for licensing
• Microsoft Internet Explorer 6 or later
• Sound card for multimedia learning
• VGA monitor and display adapter capable of 24-bit color
• Two-button mouse (scoll wheel recommended)