Various search databases and backends as alternatives to Elasticsearch.
- Sonic - github.com/valeriansaliou/sonic - lightweight & schema-less search backend
- Tantivy - github.com/quickwit-oss/tantivy - full-text search engine library inspired by Apache Lucene
- Toshi - github.com/toshi-search/Toshi - search engine built on top of Tantivy
- Bayard - github.com/mosuka/bayard - search engine built on top of Tantivy
- Meilisearch - github.com/meilisearch/meilisearch - fast and full-featured search engine
- Xapiand - github.com/Kronuz/Xapiand - restful search engine
- Typesense - github.com/typesense/typesense - fast, typo-tolerant, fuzzy search engine
- Manticore - github.com/manticoresoftware/manticoresearch - search database
- Bleve - github.com/blevesearch/bleve - modern text indexing library
- Blast - github.com/mosuka/blast - search engine built on top of Bleve
- Bluge - github.com/blugelabs/bluge - newer indexing library originally evolved from Bleve
- Zinc - github.com/zinclabs/zincsearch - search engine built on top of Bluge
- Phalanx - github.com/mosuka/phalanx - search engine built on top of Bluge with clustering
- Minisearch - github.com/lucaong/minisearch - search engine for browser/node