Software Alternatives & Startups

Glean VS Apache Solr

Compare Glean VS Apache Solr and see what are their differences

Glean

Glean is the Work AI platform that connects and understands all your company’s data (across emails, Teams / Slack, Confluence, Jira, GitHub, ServiceNow, etc.), so you can generate answers and automate work grounded in company knowledge.

No screenshot yet
Rating
0 reviews
Pricing
Paid
Apache Solr

Solr is an open source enterprise search server based on Lucene search library, with XML/HTTP and...

Rating
0 reviews
Pricing
Open source
Note: These products don't have any matching categories. If you think this is a mistake, please edit the details of one of the products and suggest appropriate categories.

Which is more popular?

Based on our record, Apache Solr seems to be more popular. It has been mentioned 19 times since March 2021.

social mentions
0 vs 19
AI Assistant popularity
100% vs 0%
alternatives listed
83 vs 132

Base details

Website, pricing, platforms and company facts side by side.

Glean
Apache Solr
Website glean.com solr.apache.org
Pricing
Paid
Open source
Company Startup from the United States · 500 - 999 employees —
Listed in

About Glean and Apache Solr

In their own words, as submitted to SaaSHub.

Glean
Apache Solr

Glean is the Work AI platform that connects and understands all your enterprise data, to generate trusted answers and automate work grounded in company knowledge. Using Glean’s powerful search and RAG technology to retrieve the most relevant, up-to-date information, Glean's AI assistant generates...

Read more about Glean

No description of Apache Solr yet.

Features and specs

What each product offers, as listed by its team.

Glean 0 features
Apache Solr 6 features

No features have been listed yet.

  • Scalability
    Apache Solr is highly scalable, capable of handling large amounts of data and numerous queries per second. It supports distributed search and indexing, which allows for horizontal scaling by adding more nodes.
  • Flexibility
    Solr provides flexible schema management, allowing for dynamic field definitions and easy handling of various data types. It supports a variety of search query types and can be customized to meet specific search requirements.
  • Rich Feature Set
    Solr comes with a wealth of features out-of-the-box, including faceted search, result highlighting, multi-index search, and advanced filtering capabilities. It also offers robust analytics and joins support.
  • Community and Documentation
    Being an open-source project, Apache Solr has a strong community and comprehensive documentation, which ensures continuous improvements, updates, and extensive support resources for developers.
  • Integrations
    Solr integrates well with a variety of databases and data sources, and it provides REST-like APIs for ease of integration with other applications. It also has strong support for popular programming languages like Java, Python, and Ruby.
  • Performance
    Solr is built on top of Apache Lucene, which provides high performance for searching and indexing. It is optimized for speed and can handle rapid data ingestion and real-time indexing.

Possible disadvantages

  • Complexity
    The initial setup and configuration of Apache Solr can be complex, particularly for those not already familiar with search engines and indexing concepts. Managing a distributed Solr installation also requires considerable expertise.
  • Resource Intensive
    Running Solr, especially for large datasets, can be resource-intensive in terms of both memory and CPU. It requires careful tuning and adequate hardware to maintain performance.
  • Learning Curve
    The learning curve for Apache Solr can be steep due to its extensive feature set and the complexity of its configuration options. New users may find it challenging to get up to speed quickly.
  • Consistency Issues
    In distributed setups, ensuring data consistency can be challenging, particularly for users unfamiliar with managing clustered environments. There may be delays or issues with synchronizing indexes across multiple nodes.
  • Maintenance
    Ongoing maintenance of a Solr instance, including monitoring, tuning, and scaling, can be labor-intensive. This requires dedicated effort to keep the system running efficiently over time.
  • Limited Real-time Capabilities
    Although Solr provides near real-time indexing, it may not be as effective as some specialized real-time search engines. For applications requiring truly real-time capabilities, additional solutions might be necessary.

Analysis

An editorial look at what each product does well and who it suits.

Glean
Apache Solr

Overall verdict

  • Glean is a strong enterprise AI search and knowledge management platform that unifies company data across apps, delivering fast, secure, and permission-aware answers powered by advanced language models.

Why this product is good

  • Connects and searches across dozens of enterprise apps like Google Workspace, Slack, Jira, Confluence, and Salesforce from a single interface
  • Respects existing document permissions so users only see content they're authorized to access
  • Uses AI and large language models to provide conversational answers, summaries, and generative assistance grounded in company knowledge
  • Learns organizational context, people, and terminology to deliver more relevant and personalized results
  • Offers a platform for building custom AI agents and workflows tailored to business needs
  • Strong focus on enterprise-grade security, compliance, and data governance

Recommended for

  • Mid-to-large enterprises with data scattered across many SaaS applications
  • Knowledge workers who spend significant time searching for information internally
  • IT and engineering teams needing quick access to documentation and code knowledge
  • Customer support and sales teams requiring fast retrieval of internal resources
  • Organizations looking to deploy AI assistants and agents grounded in their own data
  • Companies prioritizing secure, permission-aware AI search over public LLM tools

Overall verdict

  • Yes, Apache Solr is generally considered a good option for organizations seeking a reliable, scalable, and flexible search platform. It offers extensive features and is supported by a strong community, making it a solid choice for many use cases.

Why this product is good

  • Apache Solr is highly regarded for its robust full-text search capabilities, scalability, and ease of integration. As an open-source search platform, it is built on Apache Lucene and provides powerful distributed search and indexing, replication, load-balanced querying, and automated failover and recovery. Solr is designed to handle large volumes of data efficiently and supports various data formats with powerful data management features.

Recommended for

    Apache Solr is recommended for organizations that need to implement powerful search capabilities, especially those managing large, complex datasets. It is ideal for businesses that require full-text search features, e-commerce sites, content management systems, and big data applications that demand high query performance and scalability.

Videos

Walkthroughs and reviews on video.

Glean 3 videos + Add
Apache Solr 2 videos + Add

Glean for notetaking

More videos

  • - Glean: AI-powered workplace search
  • - Glean Note Taking Tutorial

Solr Index - Learn about Inverted Indexes and Apache Solr Indexing

More videos

  • - Solr Web Crawl - Crawl Websites and Search in Apache Solr

Category popularity

How often each product is chosen within a category, 0–100% relative to the other.

Score bands 0–20 21–40 41–50 51–60 61–100
Glean
Apache Solr
100% 100%
0% 0%
0% 0%
100% 100%
100% 100%
AI
0% 0%
0% 0%
100% 100%

User comments

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Reviews and articles

External articles and on-site reviews we used to compare the two products.

Glean no reviews yet
Apache Solr no reviews yet

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Social recommendations and mentions

Recommendations tracked on public social media and blogs since March 2021.

Glean 0 mentions
Apache Solr 19 mentions

Tracking Glean since Mar 2024.

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Alternatives to Glean and Apache Solr

When comparing Glean and Apache Solr, you can also consider the following products.