[mpawelski]

And what's the advantages over Mapster? (haven't used it yet, but I see it's mentioned often as a "better Automapper" alternative)

[CommonGuy]

Never used Mapster myself, but as far as I can see, Mapster does not provide a Roslyn based source generator. By default, it seems to create mappings at runtime (if not using the Mapster Tool to create mappings at build time).