Yes, both Navisworks and Revit LT offer a Free Trial.
Navisworks is designed for Large Enterprises, Medium Business and Small Business.
Revit LT is designed for Individuals, Large Enterprises, Medium Business and Small Business.
Pricing for Navisworks Starts at $78/Month when Billed Yearly whereas for Revit LT Starts at $38/Month when Billed Yearly.
Some top alternatives to Navisworks includes Autodesk BIM 360, YouBIM, BIMx, BIM Track, Vectorworks Architect, Vectorworks Landmark, Archicad, Revit LT and bimU.io.
Some top alternatives to Revit LT includes Autodesk BIM 360, YouBIM, BIMx, BIM Track, Vectorworks Architect, Vectorworks Landmark, Navisworks, Archicad, ALLPLAN and bimU.io.