Yes, but with a caveat. Hyvä doesn’t use Magento’s traditional UI components and JavaScript libraries, so extensions that rely on Knockout.js or RequireJS may need custom compatibility modules. The good news is that the Hyvä community is growing quickly, and many popular extensions now have official or community-supported Hyvä compatibility. When evaluating extensions, check if a Hyvä-compatible version exists or budget for development time to build one.