UI: Mantine UI. I know you guys are in crazy love with shadcn/ui. But let me speak from the perspective of a guy who made a real medium-sized SaaS in the past: you need more than that 👨‍🏫 Compare these 2: ui.shadcn.com/docs/component… mantine.dev/core/button/ Mantine offers way more configs for a simple button. And it is just a button. It gives more power to other components (check out also "notifications" which are called toasts in shadcnui). Mantine gives more hooks, more components, more customization, more wholeness. Mantine is made to be used in production, not in side projects. One day you will need to add an extra icon to your shadcn/ui button and you will have little sleep that night and you will spend half of a whole fkng day adding that icon and you will remember this post and think "oh sht that guy on twitter was right about UI libraries 😮‍💨". Why not MUI? It looks old. Why not Ant design? Not enough customization. Too heavy. Some specs are in Chinese language.