wordpress i-search pro is described as 'i-Search Pro changes the way of WordPress Search. It’s full WooCommerce compatible. Provide Live search results in milliseconds. Include almost everything in your search results' and is an app in the File Management category. There are more than 25 alternatives to wordpress i-search pro for a variety of platforms, including Online / Web-based, Linux, Self-Hosted solutions, Mac and Windows. The best alternative is elasticsearch, which is both free and Open Source. Other great apps like wordpress i-search pro are MeiliSearch (Free, Open Source), Algolia (Free Personal), Apache Solr (Free, Open Source) and Sphinx (search engine) (Free, Open Source).
Solr is an open source enterprise search server based on Lucene search library, with XML/HTTP and JSON APIs. Its major features include powerful full-text search, hit highlighting, faceted search, dynamic clustering, database integration, and rich document handling.
Sphinx is a free software search engine designed with indexing database content in mind. It currently supports MySQL, PostgreSQL, and ODBC-compliant databases as data sources natively. Other data sources can be indexed via pipe in a custom XML format.
Increase your sales and iterations with your target audience with a search bar integrated with your site in a moment. Gain accessibility with search predictions, delivering relevant content for your readers and followers.
Azure Search makes it easy to add powerful and sophisticated search capabilities to your website or application. Quickly and easily tune search results and construct rich, fine-tuned ranking models to tie search results to business goals.