Urby3D

A 3d modeller similar to Ac3d. Designed for modelling game assets especially levels. Minimal, intuitive and easy to use. Supports glb export file format. It is able to create 3d objects with multiple textures and preserves texture coordinates  upon boolean operations. Among the features are 4 split viewports or single 3d viewport option, ability to edit and manipulate objects, faces and vertices, and uv editing.