When comparing Preact vs zUIx.js, the Slant community recommends Preact for most people. In the question“What are the best React.js alternatives?” Preact is ranked 11th while zUIx.js is ranked 23rd. The most important reason people chose Preact is:
The size when gzipped is only 3kb, and performance is as good as (or even faster than) React itself.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Lightweight
The size when gzipped is only 3kb, and performance is as good as (or even faster than) React itself.
Pro Same API as react
Avoids having to learn an entire new paradigm, and makes it easy to switch between the two libraries later on.
Pro Lots of examples and libraries
They have a bunch of examples and addon libraries.
Pro Awesome CLI
Preact CLI gives you a perfect scoring PWA out-of-the-box with no configuration.
Pro Ease of use
Requires only basic HTML/Javascript knowledge.
Pro In-browser bundler
Can pack assets and resources in the browser console with no need for any external tool.
Pro Component-based
Creating a component is just a matter of creating 3 small files (html, css, js).
Can share and load components across websites.
Pro Web Starter Project
If you like Node.js and automatic build system, the zuix-web-starter is a "blank" web project featuring LESS, Markdown, Minify, Eslint checks, automatic bundling, PWA optimizations and much more.
Pro Lazy-loading
Built-in lazy loading feature. Almost transparent.
Pro Templates
With automatic fields mapping (data binding).
Pro jQuery alike helper
Built-in DOM helper. Basically a lite subset of jQuery.
Pro Examples
The zKit site is a collection of example components ready to use as-is or as a base for creating your own components.
Cons
Con Difficult to learn
You need to be good in React JS first to learn Preact. Documentation is not rich. And some of the examples given on site are not working. Developers are not much active on Stack Overflow as well.