SceneRadar - real-time scene quality inspector for 3ds Max (animated toolbar button)

Open the panel and instantly see every problem in your scene: missing materials, flipped normals, unwelded vertices, missing textures and 20 more checks. Live Scan monitors your scene automatically, Deep Scan runs a full geometry analysis on demand. Hit Select - the object is selected in viewport, fix it, re-scan. No manual scripting, no hunting through Scene Explorer.
Supports 3ds Max 2018–2026.

https://3dsky.org/blog/post/sceneradar-1-0