There are many alternatives to Agisoft Metashape for Mac if you are looking for a replacement. The best Mac alternative is Regard3D, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 25 alternatives to Agisoft Metashape and seven of them are available for Mac so hopefully you can find a suitable replacement. Other interesting Mac alternatives to Agisoft Metashape are Pix4Dmapper (Freemium), openMVG (Free, Open Source), WebODM (Free) and COLMAP (Free, Open Source).
COLMAP is a general-purpose Structure-from-Motion pipeline with a graphical and command-line interface. It offers a wide range of features for reconstruction of ordered and unordered image collections.
MicMac is a free open-source (Cecill-B licence) photogrammetric suite that can be used in a variety of 3D reconstruction scenarios. In aims mainly at professionnal or academic users but constant efforts are made to make it more accessible to the general public.
Skycatch is a powerful drone data platform that gives you the information to build better. COMMANDER flight app automates high accuracy data collection at the tap of a button. Data Engine automatically processes imagery into maps and models.