OpenSearchServer Alternatives

Elasticsearch is an open source, distributed, RESTful search engine.

Xapian is an open source probabilistic information retrieval library, released under the GNU...

Solr is an open source enterprise search server based on Lucene search library, with XML/HTTP and...

Algolia's Search API makes it easy to deliver a great search experience in your apps & websites. Algolia Search provides hosted full-text, numerical, faceted and geolocalized search.

Adds super fast search autocomplete, spell correct and search listing pages to your site search.

The simple way to create a great search experience for your users and your team.

SearchUnit is another open-source search engine for web-applications.

https://www.

Site Search 360 enhances and improves your built-in CMS search with autocompletion, semantic search, filters, facets, detailed analytics, and a whole lot of customization options.

freemium $9.0 / Monthly ("1,500 pages/products", "5,000 monthly searches")

Whoosh is a library of classes and functions for indexing text and then searching the index.

The simplest way to add search to your website or application. Sign up for free.

SearchBlox is an out-of-the-box Enterprise Search Solution built on top of Apache Lucene/Solr.