A syntax extension for Wolfram Language that lets you write HTML markup inside a Wolfram Language Script similar to JSX. A successor of JerryI/WSP.
Open-source and free (together with Wolfram Engine)
See DOCS 💫
WLX produces regular Wolfram Expressions, that can be used to make components, building blocks for GUI, and advanced data representation using modern tools like HTML/CSS and Javascript
Heading[Text_] := <h2 class="tracking-tight"><Text/></h2>;
<body>
<Heading>
Hello World
</Heading>
</body>Combinning it together with WLJS Interpreter and HTTP server, one can make quite complicated web-aplications like this one
See DOCS
GNU GPLv3