While the name is new, the product has an established history. Citadela is replacing DirectoryPRO, one of the top 5 WordPress Directory & Listings themes on Themeforest. See https://themeforest.net/.../directory-portal.../3840053
Besides, it's more than a directory/listing theme/plugin; it has nearly 30 layouts, most of which can be used for other purposes.
I'd like to give it 5 tacos though it's far from consummation. For instance, the speed is yet to be improved; there is a lack of updated video tutorials. Overall speaking, it's a steal to have Agency Multi Membership (unlimited websites) at this price.