Ajax Search Lite的作者是Ernest Marcinko,目前有50,000+个有效安装。已经Tested with 5.4.1版本的wordpress。
Ajax Search Lite是WordPress的实时搜索插件。 这个自适应式实时搜索引擎,通过提供用户友好的ajax支持的搜索表单-实时搜索栏,将提升您的用户体验。 您也可以使用类别和文章类型过滤器框过滤结果。 Google自动完成功能和关键字建议也包括在内。
Very smooth animations with mobile device support and regular updates. Use Ajax Search Lite as a replacement for the default WordPress search with a better looking, more efficient search engine.
Fine-tune the user experience by providing a powerful ajax search plugin to your visitors. Supports custom post types and custom fields and more. Boost your site search engine with this custom built live search engine.
实时演示 | Facebook | Twitter
Features List

Search in posts and pages
Search in custom post types such as WooCommerce Products, Events, Portfolio items and more
Search in title, description, excerpt, categories and tags and any custom fields
Automatic search replacement as well as widget and shortcode availalbe
Custom Filter boxes (checkbox filters) for categories and post types
WPML and QtranslateX compatible
8 built in templates + options for color adjustments
Retina ready vectorized SVG and CSS3 icons
Category and post exclusions
Frontend search settings boxes
Images in search results
Fully ajax powered
40+ options on the backend
Caches images for faster response time
Performance Options
Google analytics integration – both as Events and Pageviews
Primary and Secondary ordering options
Highly compatible and responsive

Demo | Pro Version Demo
Feel free to contact us via the support forums.
In Pro version

Front-end demo | Back-end demo
Search in BuddyPress, BBPress, JigoShop, Woocommerce
Search in Media Attachments and contents (PDF, Office etc..)
Search in BuddyPress activity feed, users and group names
Search in PeepSo Groups and Group Activities
Search result grouping by categories or post types
Search in custom fields
Advanced caching technology – image precaching, search phrase caching
Category filters, custom field filters, post type filters, tag filters, taxonomy term filters and date filters
Post grouping by category, post type or content type
Search in comments
100+ Themes – Fully configurable and editable – with theme customizer & preview window
4 layouts: Vertical, Horizontal, Polaroid and Isotopic (with pagination)
400+ Admin options
Google keyword suggestions and autocomplete
Compatibility options and features
Caching options & Search statistics
Keyword Highlighting & more…
Highly compatible and responsive
Full Features List