Design Connected has announced the its Connecter asset management tool now has Unreal Engine 4 integration. Using a custom file format called Connecter Unreal Assets Package (CUAP), it is able to transfer assets from one project to another, without opening Unreal Engine. The format is able to save all related assets and meta-data, which are required for the migration of complex ready-to-use assets.
According to the developers, there are two major workflows:
Full details about the Unreal Engine 4 integration can be found in the release notes.