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Apache Solr vs Elasticsearch: catalog facts
Apache Solr	Elasticsearch
Free Free and open source from the Apache Software Foundation.	Freemium Free to download and self-host; Elastic sells a hosted cloud service with a free trial.
Windows, macOS, Linux, Self-hosted	Windows, Self-hosted
Full-text, vector and geospatial search in one server Distributed indexing, replication and failover	Full-text, vector and hybrid search through one API Scales horizontally across a cluster
Requires server administration and tuning Aimed at developers rather than end users	Running and tuning a cluster takes operational effort Aimed at developers and operators rather than end users
Self-hosted	Downloadable app, Self-hosted, Hosted service
Open source	Open source
License: Apache-2.0	License not stated
No account needed	No account needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked October 2, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.