No, there is no trial available for this application. I checked official website and any websites that had the Multiframe 3D mentioned on their pages, but it appears that it's no longer available to download as DEMO. The DEMO was available some time ago, but the link isn't working anymore.
The official website leads to Bentley now, which means they've been probably acquired by them. Use the following link to contact them: https://www.bentley.com/en/support
