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Providing the opportunity to filter posts and products on your website is essential. A good filter will allow your customers to find the exact post or product they are looking for as quickly as possible, saving time, improving the experience and, subsequently, increasing conversion by way of direct access to products. WordPress, by default, comes with some limited filtering options, which in turn gave rise to plugins with better filtering options. Some filter plugins go  a step further and offer integration with Elementor and WooCommerce, and we find those to be the best. We’ve discussed three filter plugins: FacetWP, JetSmartFilters, and Search & Filter. 
FacetWP is an exciting plugin with lots of useful features. It has 12 different facet filters to choose from, allowing advanced website customization. It integrates well with Elementor and WooCommerce. It is suitable for companies that build websites for clients, but we wouldn’t necessarily recommend this filtering plugin for individuals who do not possess some coding knowledge. It doesn’t work with all WordPress themes, and it’s a little pricey. 
JetSmartFilters is a nice little plugin that works great. It has seven filter types, and its integration with Elementor and WooCommerce is absolutely lovely. While it doesn’t state that the filters are based on the facet system, they do seem to follow the same principles. Despite not having as many filters as FacetWP, the plugin makes up for it by working well with other Jet plugins, all of which can be purchased for the same price as FacetWP, for an unlimited number of websites, no less. 
Search & Filter is another plugin. In theory, it is equipped with filtering options, similar to FacetWP and JetSmartFilter. It has faceted searches, is AJAX-based, features different filter styles, and offers access to a better UX. All of the above options, however, are available only in the paid version.. The free plugin enables you to add a shortcode, which comes with a simple, not faceted filter, with the requirement to refresh the page to show the result. Furthermore, it seems that to create a truly powerful filtering system, as in the example they offered, you will have to know how to code. 
Keep in mind that we do not favor one plugin over the other. You may find that a particular plugin will better suit your requirements than another. It’s up to you to discover which plugin is the most appropriate for your needs.