A breakdown of the 5.3K+ companies running Apache Solr.
Top industries
Information technology and services2.2K+
Professional and business services753
Financial services336
Industrial and manufacturing298
Education and training235
Media and telecommunications219
Government and public services190
Art, sports and recreation145
No industry recorded: 241
Company size
1–10438 (9%)
11–50710 (15%)
51–2501,195 (25%)
251–500550 (11%)
501–1,000368 (8%)
1,001–5,000736 (15%)
5,001–10,000258 (5%)
10,001+566 (12%)
Share of companies with a recorded size, by employees.
No size recorded: 529
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Frequently asked questions
About the Apache Solr data on this page.
How many companies use Apache Solr?
Firmable holds confirmed Apache Solr detections for 5,350 distinct companies, 971 of them confirmed in the last 90 days. A company is counted once however many of its properties run it.
Which companies use Apache Solr?
Emerson Automation Solutions, Heidi and Beyond, Inc. are among the most prominent in the current set.
What industries use Apache Solr?
Information technology and services, professional and business services and financial services lead the set, across 19 industries in total.
What size companies use Apache Solr?
Adoption concentrates in the 51-250 employee band, across the companies whose size is recorded.
Where are Apache Solr users based?
The United States, Canada, Australia and Indonesia account for most detections, across 13 countries.
How current is this data?
971 companies were confirmed in the last 90 days. Last detection 14 October 2026.
