Shadow’s Spider is a cross platform (tested on windows and linux) realtime 3d rendering application. It’s built around OpenGL 4.5 and Qt.
Git at https://github.com/bergjones/Shadows_Spider
FEATURES
[ul]
[li]intuitive, fluid interface
[/li][li]multiple page attribute editor with radial popups
[/li][li]translate, rotate, scale gizmos
[/li][li]PBR-ish IBL workflow
[/li][li]Up to 3 lights
[/li][/ul]