Apache SolrApache Software Foundation
Open sourceOpen source search platform that indexes documents via ingestion handlers and serves faceted, full-text queries.
Search Indexing Pipelines
Ranking methodology
In development — no version effective yet.
Decision archetype: enterprise · Scores are category-relative (P-01) and commercial relationships never affect rank (P-04).
Tools (3)
OpenSearchOpenSearch Project
Open sourceOpen source search and analytics engine derived from Elasticsearch with data ingestion and index lifecycle tooling.
VespaVespa.ai
Open sourceOpen source engine for storing, indexing, and querying large data sets with real-time updates at serving time.