BareCSS is described as 'CSS only framework that styles frequently used HTML tags without the need for classes. It also provides a few utilities such as a responsive grid and CSS only tooltips' and is an app in the Development category. There are more than 10 alternatives to BareCSS for a variety of platforms, including Self-Hosted solutions, Online / Web-based, Mac, Windows and Linux. The best alternative is Bulma, which is both free and Open Source. Other great apps like BareCSS are UIkit (Free, Open Source), Element UI (Free, Open Source), Skeleton (Free, Open Source) and Basis (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.
Pixel Lite Bootstrap 4 UI Kit is a beautifully crafted UI Kit based on Bootstrap 4 Components. This theme was built following Bootstrap's methodologies by the heart. It has 100 components, 3 plugins and 3 example pages.
inuit.css is a lightweight, constantly updated CSS framework which provides you with a pragmatic and feature-rich starting point for all your projects. It is crammed full of useful snippets, best practices and has additional plugins to extend its usefulness further.