Apache Solrvs
Elasticsearch
Elasticsearch: The more popular Lucene-based option with a larger ecosystem
Apache Solr
Enterprise search platform built on Apache Lucene
As of 29 August 2026, Apache Solr is free to use. The long-established Lucene search platform. Softwr lists it under Databases. Apache Solr is made by Apache Software Foundation, available on Linux, Self-hosted.
Overview
What Apache Solr does
Apache Solr is an open-source enterprise search platform built on Apache Lucene, the same library underneath Elasticsearch. It predates Elasticsearch and remains widely deployed, particularly in libraries, e-commerce catalogues and government systems where installations are long-lived. Its strengths are maturity and control: faceting, highlighting, spell checking and rich configuration have been refined over many years, and SolrCloud provides distributed indexing and querying. Its weakness is presentation — configuration is XML-heavy and the developer experience feels dated beside newer engines.
What people use it for
- Library, archive and catalogue search where faceting is central
- Long-lived enterprise deployments valuing stability over novelty
- Search requiring precise, explicitly configured relevance tuning
Related searches
The honest half
Where it falls short
Concrete and checkable, so you can decide whether any of them matter to you. This is the half of a review a vendor will not write about Apache Solr.
- XML-heavy configuration and a developer experience that feels dated beside newer engines
- SolrCloud depends on ZooKeeper, adding a component Elasticsearch removed years ago
- Smaller mindshare now, so newer tutorials, hiring and integrations favour Elasticsearch
- Considerably heavier than a purpose-built application search engine
Cross-shopped
What people choose instead of Apache Solr
Each pairing was judged by two reviewers asking whether a buyer would genuinely weigh the two against each other. The ones that failed were deleted rather than published.
- Apache SolrvsOpenSearch
OpenSearch: The Apache-licensed Elasticsearch fork, if licensing is the deciding factor
- Apache SolrvsMeilisearch
Meilisearch: Far simpler when the need is application search rather than enterprise search
Pricing
What Apache Solr costs
Taken from the vendor's own pricing page. Prices move, so check before you buy.
Apache Solr
Free
- Full functionality
- No usage limits
- Community support
Capabilities
Features
Lucene-based indexing
The same mature search library underneath Elasticsearch
Faceted search
Long-refined faceting, highlighting and spell checking
SolrCloud
Distributed indexing and querying with ZooKeeper coordination
Schema control
Explicit field types and analysers for precise relevance tuning
Answered, with sources
Questions people ask
Each answer names the page it came from, so you can check it rather than take our word for it.
Is Apache Solr free?
Yes, open source under the Apache Software Foundation.
Solr or Elasticsearch?
Both are built on Lucene. Elasticsearch has the larger ecosystem and a friendlier API; Solr is very mature and strong on faceted search, and remains common in library and catalogue systems.
Is Solr still maintained?
Yes, actively, as a top-level Apache project.
Keep looking
Where to go from Apache Solr
- Apache Solr alternativesEvery product people weigh against it
- Apache Solr pricingPlans, floors and what the tiers exclude
- Apache Solr badgesWhich rules it meets, and the figure behind each
- All Databases softwareThe full category
- Best Databases softwareThe shortlist, and how it was cut
Best Databases software for
Compare Apache Solr with
- Meilisearch
- OpenSearch
- Elasticsearch
- PostgreSQL
- Typesense
- TIBCO Enterprise Message Service
- Solace PubSub+
- RabbitMQ
- Couchbase
- MariaDB
- Microsoft SQL Server
- IBM Db2
- Marqo
- Nile
- Ninox
- Presto
- Privacera
- RavenDB
Other Databases software
Open-source search and analytics suite forked from Elasticsearch
Open source9 researched notesThe heart of the Elastic Stack for search and analytics
Free, then $16.4/mo11 researched notesOpen-source typo-tolerant search engine as an Algolia alternative
Open source9 researched notesJMS message broker underpinning bank and telecom estates, now maintained rather than expanded
Pricing on request12 researched notesMulti-protocol event broker sold as software, cloud service or a hardware appliance
Free plan12 researched notesEnterprise-grade relational database management system
Free plan15 researched notesThe AI-powered database built for demanding enterprise workloads
Free, then $99/mo14 researched notesPostgreSQL database platform built for multi-tenant SaaS applications
Free, then $15/mo11 researched notesThe Meta-lineage distributed SQL query engine, distinct from the Trino fork
Open source12 researched notesCentralised data access governance from the creators of Apache Ranger, now rebranding as Trust3 AI
Pricing on request13 researched notes
Softwr does not host reviews and shows no star rating for Apache Solr, because a rating we did not collect is not ours to publish. What is here is the pricing and platform detail from the vendor’s own pages, limitations we could state concretely, and alternatives a reviewer confirmed people weigh against it. Tell us if any of it is wrong.
More on Apache Solr
Apache Solr alternatives
What people switch to, and what they give up
Apache Solr pricing
Every tier, and where the cost actually lands
Compare Apache Solr
Put it head to head with anything we hold
Apache Solr badge
Its rating, and an embed for your own site
Best Databases software alternatives
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quote
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Per RisingWave Unit hourCentralised data access governance from the creators of Apache Ranger, now rebranding as Trust3 AI
quoteThe Meta-lineage distributed SQL query engine, distinct from the Trino fork
Open source, no licence fee