Apache Solr is described as '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' and is a Search Server in the development category. There are more than 50 alternatives to Apache Solr for a variety of platforms, including Web-based, Linux, Self-Hosted, Mac and Windows apps. The best Apache Solr alternative is Meilisearch. It's not free, so if you're looking for a free alternative, you could try Elasticsearch or Algolia. Other great apps like Apache Solr are OpenSearch, Viglet Turing, Pagefind and RediSearch.
Meilisearch helps you shape a delightful search experience in a snap, offering features that work out-of-the-box to speed up your workflow.
Unmatched relevance. Real-time insights. Anything is possible — when the precision of search meets the intelligence of AI.
Algolia helps product teams connect their users with information by providing the building blocks they need to create fast, relevant, personalized search.
OpenSearch is a community-driven, open source search and analytics suite derived from Apache 2.0 licensed Elasticsearch 7.10.2 & Kibana 7.10.2. It consists of a search engine daemon, and a visualization and user interface, OpenSearch Dashboards.
Open-source, self-hosted enterprise search platform combining production search engine, semantic RAG pipeline with citations, agent framework, and generative AI. Features hybrid BM25 and vector search, broad content connectors, full privacy, and on-premises deployment.
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.
Open source search server designed to be fast, scalable and with powerful and accurate full-text search capabilities derived from Sphinx search project.
Carrot2 organizes your search results into topics. With an instant overview of what's available, you will quickly find what you're looking for.
Searchspring provides solutions for online retailers such as site search, personalization, merchandising, and insights. It's compatible with ecommerce platforms like Shopify, Magento, BigCommerce, and Miva.
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Solr is self hosted. Algoria is not.