Two companies with very different centers of gravity
Zola is a wedding platform whose strategic centerpiece is the registry. The cash-fund and universal-retail registry is the best in the category, and the free wedding website, guest list, RSVP, and planning checklist all orbit around keeping couples in the ecosystem long enough to build and share that registry.
Minted is a design company first and a wedding website builder second. Its templates are created by independent artists alongside the paper stationery, so the website and the printed save-the-dates and invitations share a visual language. The website is free, and Minted often includes a stationery credit, because the website exists largely to drive stationery sales. That is not a criticism; it is the reason Minted's designs are stronger than a general platform's.