CrossManager vs HOOPS Exchange

CrossManager has no write-up on Specifiction yet; its figures are above.

HOOPS Exchange is a C++ SDK for adding 2D and 3D CAD import and export to applications through one API. It gives development teams access to B-REP geometry, PMI, model trees, views, persistent IDs, styles, construction geometry, and visualization data. The product lists more than 30 import formats and more than 10 export formats, including CATIA, NX, SOLIDWORKS, Revit, IFC, JT, STEP, STL, and FBX. HOOPS Exchange uses PRC for data access and says it preserves geometry accuracy and data integrity; the maker says files can be compressed up to 100 times smaller than the original CAD files. The SDK integrates with Parasolid and lists connections to ACIS, Open Cascade, Polygonica, HOOPS Visualize, OpenGL, DirectX, Vulkan, Unity, and Unreal. APIs are available for C, C++, and C#. Windows, Linux, and macOS are listed, with limited functionality on iOS and Android. A free 60-day evaluation offers full access and technical expert support, but evaluation keys expire at the end of the period and cannot be used for production software.