Tailwind UI is described as 'Over 400+ professionally designed, fully responsive, expertly crafted component examples you can drop into your Tailwind projects and customize to your heart’s content' and is an app in the Development category. There are more than 50 alternatives to Tailwind UI for a variety of platforms, including Online / Web-based, Self-Hosted solutions, Mac, Windows and Linux. The best alternative is Bootstrap, which is both free and Open Source. Other great apps like Tailwind UI are Bulma (Free, Open Source), Materialize (Free, Open Source), UIkit (Free, Open Source) and Semantic UI (Free, Open Source).
Milligram provides a minimal setup of styles for a fast and clean starting point. Specially designed for better performance and higher productivity with fewer properties to reset resulting in cleaner code.
Juiced has many of the same layout features that you know and love, but improves upon them with better mobile targeting, custom column ordering, better alignment options, understandable HTML, and less boilerplate styles.
Flat UI Pro is made on the basis of Twitter Bootstrap in a stunning flat-style, and the kit also includes a PSD version for designers. Flat UI Pro contains a huge number of basic components, icons and glyphs.