SunDAT
PV Design Extension for SketchUp
Compatible only with SketchUp Pro 2020, SketchUp Pro 2019, SketchUp Pro 2018, SketchUpPro 2017, & SketchUp Make 2017.
SunDAT Utilities
AutoCAD Plugin required to import SunDAT data
Compatible only with AutoCAD 2016-2020 (including Civil3D). LT versions not supported.
SketchUp
All versions of SketchUp are available for download at the link below