Onshape is also Parasolid based. It would be great to see a direct connection similar to what has been demoed for Blender (using Web Sockets). There are probably several avenues to do this, but here are some relevant links: https://www.onshape.com/en/features/integrations

Right now the only other 3rd party modeling tool is Phi https://appstore.onshape.com/apps/Design%20&%20Documentation/BI4NF3BZAEQXBXOERCYO6NSHJ5Z62TB6ZI472VA=/description