AECOM
Yes, both iConstruct and Vectorworks Designer offer a Free Trial.
iConstruct is designed for Large Enterprises, Medium Business and Small Business.
Vectorworks Designer is designed for and undefined.
Pricing for iConstruct Starts at $80/Month whereas for Vectorworks Designer Starts at $4,813.
Some top alternatives to iConstruct includes Autodesk BIM 360, YouBIM, BIMx, BIM Track, Vectorworks Landmark, Navisworks, Archicad, Revit LT, Green Building Studio and bimU.io.
Some top alternatives to Vectorworks Designer includes YouBIM, Space Designer 3D, Vectorworks Architect, Vectorworks Landmark, Navisworks, Archicad, Revit LT, IrisVR, MasterSeries and Autodesk Design Review.