G4DAE : Export Geant4 Geometry to COLLADA/DAE XML files
COLLADA files explained and how to use them | Adobe
SketchUp to Blender: How to Import SKP Files in Blender | All3DP
Disection of the Collada Format - Tim Linger's Collada Builder for Sketchup
SketchUp SKP Export Converter & Translator for 3ds Max,Maya,Unity (VR & AR),CINEMA 4D,SketchUp,LightWave,U3D,Acrobat,NGRAIN,COLLADA and more.
Imported a file from Sketchup (.dae) and when opened in Blender i was greeted by this mess, followed by 2/3 of the model missing. Help? I'm still kinda new to Blender. :
SketchUp to CityEngine - Esri Community
importing collada file to sketchup : r/Sketchup
Collada File from Sketchup to FreeCAD - YouTube
Tutorial : How to Import Sketchup files to SolidWorks? | GrabCAD Tutorials
Collada file importing issues - SketchUp - SketchUp Community