ODA File Converter
7.1#3 in 3d file converter softwareFree planFree planAndroidLinuxmacOSWindows
VisitIt suits people who need to convert batches of DWG or DXF files between versions, including through a command-line workflow. Non-members are limited to non-commercial use.
Assimp suits developers who need to load 3D assets into a shared format for further processing. Its language bindings, interfaces, and platform support may fit projects across several development environments.