Azure Cognitive Search - Azure Search makes it easy to add powerful and sophisticated search capabilities to your website or...
Apache Solr - Solr is an open source enterprise search server based on Lucene search library, with XML/HTTP and...
Algolia - 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.
ElasticSearch - Elasticsearch is an open source, distributed, RESTful search engine.
Typesense - Typo tolerant, delightfully simple, open source search 🔍
Carrot2 - Carrot2 organizes your search results into topics. With an instant overview of what's available, you will quickly find what you're looking for.