A breakdown of the 5.7K+ companies running Qualys.
Top industries
Information technology and services2K+
Financial services946
Professional and business services645
Industrial and manufacturing480
Media and telecommunications187
Health and wellness166
Education and training165
Construction and building147
No industry recorded: 161
Company size
1–10249 (5%)
11–50539 (10%)
51–250970 (18%)
251–500671 (12%)
501–1,000547 (10%)
1,001–5,0001,186 (22%)
5,001–10,000425 (8%)
10,001+794 (15%)
Share of companies with a recorded size, by employees.
No size recorded: 356
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Frequently asked questions
About the Qualys data on this page.
How many companies use Qualys?
Firmable holds confirmed Qualys detections for 5,737 distinct companies, 1,098 of them confirmed in the last 90 days. A company is counted once however many of its properties run it.
Which companies use Qualys?
PowerPlan, AVANT Communications and Lumin Digital are among the most prominent in the current set.
What industries use Qualys?
Information technology and services, financial services and professional and business services lead the set, across 19 industries in total.
What size companies use Qualys?
Adoption concentrates in the 1,001-5,000 employee band, across the companies whose size is recorded.
Where are Qualys users based?
The United States, Canada, Australia and Singapore account for most detections, across 13 countries.
How current is this data?
1,098 companies were confirmed in the last 90 days. Last detection 13 October 2026.
