Updated August 2026
    Actively maintained
    Real momentum
    1.7k

    Apache Solr: Maintenance, Licence and Alternatives

    Enterprise search platform featuring full-text search, hit highlighting, faceted search, real-time indexing, dynamic clustering, and rich document (e.g., Word, PDF) handling.

    TL;DR • Apache Solr • as of August 2026

    Apache Solr is an open-source search engines project, with 1.7k GitHub stars and a health score of 89/100. It committed 888 times in the last twelve months across 12 of those months, and its status is actively maintained. Licence: Apache-2.0. It has real momentum, so treat it as a live competitor rather than a stale repository.

    1.7k
    GitHub stars
    89/100
    Health score
    888
    Commits (12 mo)
    12/12
    Active months

    Maintenance health

    Status Actively maintained — Committed within the last 45 days.
    Last commit 2026-08-15
    Days since last commit 2
    Commits, last 3 months 186
    Commits, last 12 months 888
    Months with activity 12 of 12
    Last release None detected
    Archived No
    Licence Apache-2.0
    Category Search Engines

    Health score combines commit recency, twelve-month commit volume, months with activity, release recency and archive state. Metadata refreshed August 2026.

    What the licence lets you do

    Apache-2.0

    Permissive (MIT, Apache, BSD): you can fork it, close the source and sell it. Lowest legal friction for a commercial product.

    This matters most when you plan to sell a hosted version. A permissive licence means anyone — including a competitor with more capital — can do the same, so your defensibility has to come from distribution, support or data, not from the code.

    What Apache Solr means for your idea

    Contested · 47/100
    Search Engines category →

    Apache Solr is shipping code consistently, so a buyer comparing your product will find a maintained free option. Price and position against the total cost of self-hosting it, not against the paid incumbent's list price.

    Winnable, but differentiation is not optional. Pick one underserved segment and be visibly better for it rather than competing feature-for-feature with a free tool.

    Apache Solr: common questions

    Is Apache Solr still maintained in 2026?

    Actively maintained. Apache Solr recorded 888 commits over the last twelve months, with activity in 12 of those months and 186 commits in the last quarter. Last commit: 2026-08-15. No recent release was detected. Committed within the last 45 days.

    Can I use Apache Solr commercially?

    Apache Solr is published under Apache-2.0. Permissive (MIT, Apache, BSD): you can fork it, close the source and sell it. Lowest legal friction for a commercial product.

    How crowded is the Search Engines category?

    16 open-source implementations, 11 of them actively maintained, led by ElasticSearch at 78k stars. Saturation score 47/100 — Contested. Several maintained alternatives exist, but no one owns the category.

    Apache Solr alternatives in Search Engines

    SearXNG

    Search Engines

    36k

    Internet metasearch engine which aggregates results from various search services and databases (Fork of Searx).

    Actively maintained
    Real momentum
    AGPL-3.0

    Typesense

    Alternative to Algolia, Digital search experience, Search

    26k

    Blazing fast, typo-tolerant open source search engine optimized for developer happiness and ease of use.

    Actively maintained
    Real momentum
    GPL-3.0

    OpenSearch

    Search Engines

    14k

    Distributed and RESTful search engine.

    Actively maintained
    Real momentum
    Apache-2.0

    Competing with free? Check the market first.

    IdeaProof scores your idea against live competitors, market size and 1,000+ documented startup failures in about two minutes.