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Apache Solr VS OpenSearch_

As of 4 November 2026, OpenSearch is named by 1,145 companies and Apache Solr by 371; Apache Solr skews to companies under 200 people (49% vs 43%), OpenSearch to companies over 1,000 (30% vs 29%).

As of 4 November 2026 · refreshed daily · counts move as websites, DNS and career sites are re-read.

The website-and-DNS footprint is not comparable between a marketing suite and a CRM: Apache Solr's script and mail records show on hundreds of thousands of small sites, OpenSearch rarely leaves a trace outside its own apps. Compare on the job-posting numbers; use the footprint for reach.

Apache Solr: 2–200 employees
49%
OpenSearch: 2–200 employees
43%
Apache Solr: 1,000+ employees
29%
OpenSearch: 1,000+ employees
30%
Postings per company, 90 days
1.9 · 2.5
Website or DNS footprint
0 · 0
371companies name Apache Solr
1,145companies name OpenSearch
78name both
715 · 2,907postings in 90 days, Apache Solr · OpenSearch
02 — Side by side

Who chooses which

Share of each tool's companies in every segment. "Leans" marks a gap of more than two points.

By company size
SegmentApache SolrshareOpenSearchshareLeans
Self-employed92%303%even
2-10 employees288%646%even
11-50 employees6618%15113%Apache Solr
51-200 employees8623%27324%even
201-500 employees339%17415%OpenSearch
501-1000 employees4312%11510%even
1001-5000 employees6116%15714%Apache Solr
5001-10000 employees144%595%even
10,001+ employees318%12211%OpenSearch
By industry
SegmentApache SolrshareOpenSearchshareLeans
Technology & software22360%65757%Apache Solr
Business & finance services5314%21519%OpenSearch
Manufacturing & industry226%686%even
Media & content216%444%even
Commerce & trade164%414%even
Public, community & associations134%242%even
Automotive62%91%even
Consumer services & leisure62%323%even
Transport, logistics & rental41%111%even
Utilities & infrastructure41%171%even
Hospitality & travel21%101%even
Health care10%101%even
By country
SegmentApache SolrshareOpenSearchshareLeans
United States22661%73064%OpenSearch
Germany236%454%Apache Solr
France185%222%Apache Solr
India185%202%Apache Solr
United Kingdom113%857%OpenSearch
Canada82%252%even
Italy72%––outside top 12
Switzerland41%91%even
Sweden41%151%even
Austria31%––outside top 12
Lithuania31%––outside top 12
Brazil21%212%even
Spain––131%outside top 12
Netherlands––111%outside top 12
Australia––101%outside top 12
Postings by team (share of each tool's postings)
SegmentApache SolrshareOpenSearchshareLeans
Software engineering78463%1,85652%Apache Solr
Data & AI17914%77622%OpenSearch
IT operations & business systems958%43012%OpenSearch
Product, program & project management252%672%even
Engineering (non-software)71%321%even
Sales71%231%even
Unclassified71%70%even
Marketing & communications50%60%even
arts media and entertainment20%10%even
Customer service & success20%331%even
Design & UX20%20%even
Human resources20%30%even
Administration & office10%––outside top 12
Business development & strategy10%––outside top 12
construction and civil10%––outside top 12
Education & training10%––outside top 12
General management & consulting10%80%even
Legal, compliance & risk––50%outside top 12
Quality, safety & environment––50%outside top 12
research and science––10%outside top 12
Go deeper

The companies behind each column

Companies using Apache Solr →
Companies using OpenSearch →
search engines ranked →

Cite this

Quote the sentence with the date and the link. The numbers change daily; the link always shows the current ones.

OpenSearch is named by 1,145 companies in job postings and Apache Solr by 371; 78 name both. (Breaknorm, 4 November 2026, https://breaknorm.co/compare/apache-solr-vs-opensearch)
How we know

Read from the source, not self-reported

Every number on this page can be traced to a page we crawled or a posting we read. Full methodology →

  • Job postingsRead hourly from career sites. A tool counts when the employer's own text names it as the team's system; both tools can count for one company.
  • Website and DNSScripts and embeds on the company's pages, plus SPF, DKIM, MX and CNAME records of its domain that point at the vendor.
  • SegmentsCountry, size and industry from the company profile built from its website.
  • Not a reviewNo ratings, prices or feature claims. For those, read the vendors.
FAQ

Apache Solr vs OpenSearch: questions

Which is more used, Apache Solr or OpenSearch?

By companies naming it in their own job postings, OpenSearch (1,145) over Apache Solr (371). By website-and-DNS footprint, OpenSearch (0 vs 0), because its scripts and mail records sit on many small company sites.

Who chooses Apache Solr?

49% of Apache Solr companies have 2 to 200 employees, against 43% for OpenSearch. 29% of Apache Solr companies have over 1,000 employees, against 30% for OpenSearch.

Do companies run both?

78 companies name both in their postings, usually Apache Solr in marketing and OpenSearch in sales, or during a migration.

Where do these numbers come from?

From the employer's own text in job postings read hourly from career sites, and from scripts found on company websites in our crawl. No vendor data, no surveys.

Companies and people

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SearchCompany searchFilter on what a company actually does→SearchPeople searchDecision makers, normalized and verified→MCP and APICompanies over MCP and APICount, search and export from your agent→DatasetCompany and People datasetThe whole market in your warehouse→DataCoverage by countryCheck your market before you start→SearchLocal businessesThe same database, by category and city→

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