Sphinx is a 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.

Manticore search is described as 'Open source search server designed to be fast, scalable and with powerful and accurate full-text search capabilities derived from Sphinx search project' and is an app in the online services category. There are more than 50 alternatives to Manticore search for a variety of platforms, including Web-based, SaaS, Linux, Self-Hosted and Mac apps. The best Manticore search alternative is Meilisearch. It's not free, so if you're looking for a free alternative, you could try Algolia or Elasticsearch. Other great apps like Manticore search are OpenSearch, Apache Solr, Carrot2 and Searchspring.
Sphinx is a 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.

Open-source, extensible web crawler designed for large-scale, archival-quality web archiving, preserves digital artifacts, supports modular plugins, distributed crawling, detailed monitoring, scheduling, and exports data in standardized formats for preservation.

Qdrant (read: quadrant) is a vector similarity search engine and vector database. It provides a production-ready service with a convenient API to store, search, and manage points—vectors with an additional payload Qdrant is tailored to extended filtering support.
Milvus is an open-source vector database built to power embedding similarity search and AI applications. Milvus makes unstructured data search more accessible, and provides a consistent user experience regardless of the deployment environment.


Whoosh is a library of classes and functions for indexing text and then searching the index. It allows you to develop custom search engines for your content.
Redisearch implements a search engine on top of Redis, but unlike other Redis search libraries, it does not use internal data structures like sorted sets.
The easiest way to add great search to your website
Swiftype is a hosted software service that eliminates the need to create your own search software from scratch, making it possible for any website owner or mobile app developer to add great search to their product. Features inc.

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.




With Google Custom Search, add a search box to your homepage to help people find what they need on your website.
An intelligent yet easy-to-install site search for any website. Simply start typing to get search autosuggestions and semantically enriched structured data at your fingertips.




Xapian is an open source probabilistic information retrieval library, released under the GNU General Public License (GPL). It is a full text search engine library for programmers. It is written in C++, with bindings to allow use from Perl, Python, PHP, Java, Tcl, C#, Ruby, and...
OpenSearchServer is an open source application server allowing development of index-based applications like search engines. Main features of OpenSearchServer are : An integrated crawler for databases, web pages and rich documents; a user friendly GUI allowing development of most...