Lately, I've been working on a new library called purescript-sdom. It is an attempt to build a UI library in 100% PureScript without using the virtual DOM. I'll give an overview of the motivation behind the library, and the way in which it was implemented.
Riot lets you build user interfaces with custom tags using simple and enjoyable syntax. It uses a virtual DOM similar to React but faster. Riot is very tiny compared to industry standards. We think there is a clear need for another UI library.