Apache Lucene VS Apache Solr_
As of 4 November 2026, Apache Solr is named by 371 companies and Apache Lucene by 154; Apache Lucene skews to companies under 200 people (49% vs 49%), Apache Solr to companies over 1,000 (29% vs 31%).
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 Lucene's script and mail records show on hundreds of thousands of small sites, Apache Solr rarely leaves a trace outside its own apps. Compare on the job-posting numbers; use the footprint for reach.
- Apache Lucene: 2–200 employees
- 49%
- Apache Solr: 2–200 employees
- 49%
- Apache Lucene: 1,000+ employees
- 31%
- Apache Solr: 1,000+ employees
- 29%
- Postings per company, 90 days
- 1.8 · 1.9
- Website or DNS footprint
- 0 · 0
Who chooses which
Share of each tool's companies in every segment. "Leans" marks a gap of more than two points.
| Segment | Apache Lucene | share | Apache Solr | share | Leans |
|---|---|---|---|---|---|
| Self-employed | 6 | 4% | 9 | 2% | even |
| 2-10 employees | 10 | 6% | 28 | 8% | even |
| 11-50 employees | 25 | 16% | 66 | 18% | even |
| 51-200 employees | 40 | 26% | 86 | 23% | Apache Lucene |
| 201-500 employees | 12 | 8% | 33 | 9% | even |
| 501-1000 employees | 14 | 9% | 43 | 12% | Apache Solr |
| 1001-5000 employees | 24 | 16% | 61 | 16% | even |
| 5001-10000 employees | 9 | 6% | 14 | 4% | Apache Lucene |
| 10,001+ employees | 14 | 9% | 31 | 8% | even |
| Segment | Apache Lucene | share | Apache Solr | share | Leans |
|---|---|---|---|---|---|
| Technology & software | 88 | 57% | 223 | 60% | Apache Solr |
| Business & finance services | 29 | 19% | 53 | 14% | Apache Lucene |
| Manufacturing & industry | 11 | 7% | 22 | 6% | even |
| Media & content | 7 | 5% | 21 | 6% | even |
| Public, community & associations | 6 | 4% | 13 | 4% | even |
| Consumer services & leisure | 5 | 3% | 6 | 2% | even |
| Commerce & trade | 3 | 2% | 16 | 4% | Apache Solr |
| Automotive | 2 | 1% | 6 | 2% | even |
| Utilities & infrastructure | 2 | 1% | 4 | 1% | even |
| Hospitality & travel | 1 | 1% | 2 | 1% | even |
| Transport, logistics & rental | – | – | 4 | 1% | outside top 12 |
| Health care | – | – | 1 | 0% | outside top 12 |
| Segment | Apache Lucene | share | Apache Solr | share | Leans |
|---|---|---|---|---|---|
| United States | 101 | 66% | 226 | 61% | Apache Lucene |
| United Kingdom | 10 | 6% | 11 | 3% | Apache Lucene |
| Germany | 7 | 5% | 23 | 6% | even |
| Brazil | 5 | 3% | 2 | 1% | Apache Lucene |
| Canada | 3 | 2% | 8 | 2% | even |
| Switzerland | 3 | 2% | 4 | 1% | even |
| France | 3 | 2% | 18 | 5% | Apache Solr |
| India | 3 | 2% | 18 | 5% | Apache Solr |
| Sweden | 3 | 2% | 4 | 1% | even |
| Belgium | 1 | 1% | – | – | outside top 12 |
| Czechia | 1 | 1% | – | – | outside top 12 |
| Greece | 1 | 1% | – | – | outside top 12 |
| Italy | – | – | 7 | 2% | outside top 12 |
| Austria | – | – | 3 | 1% | outside top 12 |
| Lithuania | – | – | 3 | 1% | outside top 12 |
| Segment | Apache Lucene | share | Apache Solr | share | Leans |
|---|---|---|---|---|---|
| Software engineering | 249 | 58% | 784 | 63% | Apache Solr |
| Data & AI | 63 | 15% | 179 | 14% | even |
| IT operations & business systems | 44 | 10% | 95 | 8% | Apache Lucene |
| Customer service & success | 4 | 1% | 2 | 0% | even |
| Product, program & project management | 4 | 1% | 25 | 2% | even |
| Legal, compliance & risk | 3 | 1% | – | – | outside top 12 |
| Engineering (non-software) | 2 | 0% | 7 | 1% | even |
| Marketing & communications | 1 | 0% | 5 | 0% | even |
| Sales | 1 | 0% | 7 | 1% | even |
| Unclassified | – | – | 7 | 1% | outside top 12 |
| arts media and entertainment | – | – | 2 | 0% | outside top 12 |
| Design & UX | – | – | 2 | 0% | outside top 12 |
| Human resources | – | – | 2 | 0% | outside top 12 |
| Administration & office | – | – | 1 | 0% | outside top 12 |
| Business development & strategy | – | – | 1 | 0% | outside top 12 |
| construction and civil | – | – | 1 | 0% | outside top 12 |
| Education & training | – | – | 1 | 0% | outside top 12 |
| General management & consulting | – | – | 1 | 0% | outside top 12 |
The companies behind each column
Companies using Apache Lucene →
Companies using Apache Solr →
search engines ranked →
Quote the sentence with the date and the link. The numbers change daily; the link always shows the current ones.
Apache Solr is named by 371 companies in job postings and Apache Lucene by 154; 114 name both. (Breaknorm, 4 November 2026, https://breaknorm.co/compare/apache-lucene-vs-apache-solr)
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.
Apache Lucene vs Apache Solr: questions
Which is more used, Apache Lucene or Apache Solr?
By companies naming it in their own job postings, Apache Solr (371) over Apache Lucene (154). By website-and-DNS footprint, Apache Solr (0 vs 0), because its scripts and mail records sit on many small company sites.
Who chooses Apache Lucene?
49% of Apache Lucene companies have 2 to 200 employees, against 49% for Apache Solr. 31% of Apache Lucene companies have over 1,000 employees, against 29% for Apache Solr.
Do companies run both?
114 companies name both in their postings, usually Apache Lucene in marketing and Apache Solr 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.
Get either list your way
The same data as a search, over MCP and the API, as bulk files, or pushed to you as it changes.
Every company on either tool,
with the person who owns it
Filter on Apache Lucene or Apache Solr, and get 1,000 records free.