I built and recently released a UI kit for Rails - https://zestui.com

Built with Phlex, styled with Tailwind with custom built Stimulus controllers.

It's got

- 25 themes

- Dark Mode

- Form Builder

- Icons

- Built in Flash Toast

- The components are responsive or have specific mobile views

- All the JS needed (Stimulus controllers) is wired up automatically

Phlex is a game changer. It is simple, powerful, intuitive and performant. I will never ever write a component as a partial/ViewComponent again.

A short video (50 seconds) showing it off: https://youtu.be/OQmDZddLtR8

It has crossed $500/month but since it's a one time purchase it is too early to tell whether it will sustain since I launched it only in December 2023.