When comparing Nunjucks vs Webix, the Slant community recommends Nunjucks for most people. In the question“What are the best JavaScript templating engines?” Nunjucks is ranked 5th while Webix is ranked 13th.
Ranked in these QuestionsQuestion Ranking
Pros
Pro Very user friendly
Pro Building blocks for CMS Websites
Another token based system with all of the logic, looping and variable control that other engines provide. But in addition it supports some more advanced page composition elements e.g. block inheritance, includes, layout inheritance, custom tags and macros — all absolutely perfect for a CMS where pages are typically composed of a series of “building blocks”.
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Pro Suppported by Mozilla
Pro Has Jinja2 as role model
Pro Open Source
Pro A lot of widgets
Webix is one of the most extensive UI component libraries, second only to Sencha ExtJS. Not only considering the number of widgets, but also the API methods for manipulating these widgets.
Pro Views can be constructed using JavaScript without HTML
The most common way of working with webix is to create a JSON configuration of your view in JavaScript. When you use TypeScript, you get complete typechecking and intellisense in your IDE.
Pro Seems to be quite stable
Even the most complicated GUIs are bug-free most of the time.
Pro Webix Jet
The webix Jet library adds all the required features for SPA development (routing, template loading, ...)
Pro Extremely simple to implement.
To get started is extremely simple. It has a low learning curve.
Pro Mature project
Regular updates and releases.
Pro Great support from the webix team
The company behind webix is really quick in answering any questions you have on their forum or via email.
Pro Awesome responsive material skins
Great design and icons pack.
Cons
Con Seeking new maintainer
Con Commercial license
It's not free for commercial applications.
Con Not very popular
Not really a reason to not recommend it. But it has still a small user base. It deserves a lot more attention.
Con Not modular
The library is not modular (except for some additional more complex widgets). If you only need a few widgets, you still need to include the entire library.