information retrieval Archives

RediSearch – search and indexing engine for Redis

RediSearch adds full-text, vector, numeric and geospatial querying to Redis data, with secondary indexes and aggregation support.

ParadeDB adds BM25-ranked full-text and vector search to PostgreSQL, with SQL joins, facets, filtering and analytical aggregations.

Quickwit indexes logs and event data for cloud-native search, combining object storage, distributed query services and aggregations.

Vespa is a distributed search and recommendation platform with vector retrieval, configurable ranking, real-time updates and analytics.

OpenSearch is a distributed search and analytics engine supporting full-text, vector and hybrid retrieval, SQL queries and observability.

Groonga combines full-text search and column-oriented storage with fast updates, tokenizers, filters, faceting and geospatial queries.

MeTA combines text tokenization, indexing, classification, ranking, topic models and linguistic processing in one research toolkit.

Apache Solr delivers distributed enterprise search with faceting, highlighting, configurable schemas, replication and REST APIs.

Elasticsearch indexes documents for distributed full-text, vector and hybrid search, with REST APIs, aggregations and analytics.

Meilisearch delivers typo-tolerant application search with filtering, ranking, synonyms, federated queries and hybrid vector retrieval.

Xapian is an information retrieval library with ranked full-text search, stemming, spelling suggestions, synonyms and query expansion.

Sphinx indexes SQL-backed content for full-text search, offering relevance ranking, phrase queries, real-time indexes and SphinxQL.

Typesense provides instant, typo-tolerant search with faceting, geo-filtering, tunable ranking and vector-based hybrid retrieval.

Apache Lucene is a search library offering indexing, BM25 ranking, phrase queries, faceting, highlighting and nearest-neighbour retrieval.

Manticore Search combines full-text, vector and hybrid retrieval with SQL queries, real-time indexing, columnar storage and analytics.