Apache Solr
Enterprise search platform featuring full-text search, hit highlighting, faceted search, real-time indexing, dynamic clustering, and rich document (e.g., Word, PDF) handling.
Maintained, but at a slower pace than the leaders in its category.
Commit activity more than 76% of tracked projects; popularity more than 44%. How this is calculated.
Commits, last 11 months
| Stars | 1.7k |
|---|---|
| Latest release | — |
| Repo updated | 27 Sept 2026 |
| Licence | Apache-2.0 |
| Built with | Java, Docker, K8S |
Is Apache Solr actively maintained?
Over the last 11 months the project absorbed 827 commits, of which 271 arrived in the most recent quarter — roughly 90 commits a month.
Activity is accelerating: the last quarter carried 62% more commits than the one before it.
No tagged releases are published, so there is no stable version to pin to — you would deploy from the default branch or a container image built from it.
Apache Solr ranks #8 of 16 in Search Engines, placing it mid-table for maintenance activity.
What Apache Solr actually does
Apache Solr is an enterprise search platform built for processing text and document data. It provides indexing capabilities to handle full-text queries, faceted navigation, and content extraction from files like PDFs and Word documents.
Best fit: It suits large-scale document repositories and applications requiring complex, real-time search queries across structured and unstructured data.
Worth knowing: Operational overhead can be high due to the complexity of tuning and maintaining a Java-based search cluster at scale.
Deployment notes
Containerised deployments typically require persistent storage volumes for index data and adequate Java memory allocation within your orchestrator.
Links
Apache Solr as a replacement for
Alternatives to Apache Solr
Projects in the same categories, ordered by health score.
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