vai is a viewer for all common 3d interchange file formats used in vfx.

It features a multi-document interface and includes tools to present and analyze assets.

vai can play back animations.

Key features are:

• View multiple 3d assets at the same time.
• Fully dockable GUI
• “Technical” view modes such as a matcap override
• A/B comparison

3D file formats

• OpenUSD
• FBX
• Collada
• OpenVDB
• .LWO, .blend …
• many more as supported by Assimp

vai is based on OpenUSD.