Solr
Apache Solr is an open-source search platform built on Apache Lucene, hosted by the Apache Software Foundation.
Profile
Apache Solr is an open-source search platform that provides full-text search, faceted navigation, and real-time indexing for enterprise applications.
Apache Solr is an open-source search platform built on Apache Lucene, hosted by the Apache Software Foundation. It originated from CNET Networks in 2004, which contributed the code to Apache in 2006. Solr provides full-text search, faceted navigation, hit highlighting, and real-time indexing.
It is used by organizations for enterprise search, e-commerce product discovery, and log analytics. As of June 2026, Solr is maintained by a community of contributors and committers, with the latest commit on the main branch occurring on June 5, 2026. The project has 1,600 GitHub stars and 829 forks, with 38,962 commits in its history.
Solr is not a company with revenue, funding, or headcount; it is an open-source project. There is no evidence of layoffs, acquisitions, or leadership changes specific to Solr, as it operates under the Apache Software Foundation's governance model. Recent development activity includes test fixes, dependency updates (e.g., ONNX Runtime to v1.26.0), and migration from Java Collections.empty* methods.
The project continues to evolve with contributions from individuals like dsmiley and claude. Solr competes with Elasticsearch in the search and analytics space, but remains a distinct project with its own community and release cycle.
Who buys this
- Enterprises needing internal search engines for documents, intranets, or knowledge bases
- E-commerce companies requiring product search and faceted navigation
- Organizations building log analytics or data exploration platforms
- Developers integrating search into web or mobile applications
- Government and academic institutions needing scalable search infrastructure
Strengths and what to watch
Strengths
- Mature, battle-tested open-source project with over 20 years of development and a large community (38,962 commits, 1,600 stars)
- Rich feature set including full-text search, faceting, hit highlighting, and real-time indexing, built on Apache Lucene
- Active development with regular commits, dependency updates, and a structured release process (e.g., LTS releases)
Watch for
- Competition from Elasticsearch, which has a larger market share and more commercial backing
- Dependence on volunteer contributors and the Apache Software Foundation for governance and maintenance
- Potential fragmentation if key committers leave or if the community fails to keep pace with user expectations for cloud-native features
Key Information
- Industry
- Open Source Infra - Search
- Founded
- 2004
Frequently Asked Questions
What is Apache Solr used for?
Apache Solr is an open-source search platform used for full-text search, faceted navigation, hit highlighting, and real-time indexing in enterprise applications. It helps organizations with internal document search, e-commerce product discovery, log analytics, and data exploration.
How does Solr compare with Elasticsearch?
Solr competes with Elasticsearch in the search and analytics space but remains a distinct open-source project with its own community and release cycle. Elasticsearch has a larger market share and more commercial backing, while Solr is mature with over 20 years of development.
What are the main features of Apache Solr?
Apache Solr provides full-text search, faceted navigation, hit highlighting, and real-time indexing. It is built on Apache Lucene and offers a rich feature set for enterprise search, e-commerce product discovery, and log analytics, making it suitable for various data exploration needs.
Is Solr still actively maintained in 2026?
Yes, Solr is actively maintained by a community of contributors and committers under the Apache Software Foundation. As of June 2026, the latest commit on the main branch was June 5, 2026, with recent activity including test fixes and dependency updates like ONNX Runtime to v1.26.0.
What are common use cases for Solr in e-commerce?
In e-commerce, Solr is used for product search and faceted navigation, allowing customers to filter results by attributes like price, brand, or size. It enables real-time indexing of product data and provides hit highlighting to improve the shopping experience through fast, relevant search results.
What are the risks of using Apache Solr?
Risks include competition from Elasticsearch, which has more commercial backing, and dependence on volunteer contributors for maintenance. Potential fragmentation could occur if key committers leave or if the community fails to keep pace with user expectations for cloud-native features.
Sources
- github.com — Project activity, commit history, stars, forks, and recent development (e.g., test fixes, dependency updates)
- investors.sunrun.com — Not relevant to Solr; confirms Sunrun's financial results, not Solr's
- finance.yahoo.com — Not relevant to Solr; confirms Sunrun's financial results, not Solr's
- www.solar.eu — Not relevant to Solr; confirms Solar A/S quarterly report, not Solr's