A breakdown of the 489 companies running Kamailio.
Top industries
Information technology and services274
Media and telecommunications88
Professional and business services34
Financial services16
Education and training11
Health and wellness10
Construction and building6
Industrial and manufacturing6
No industry recorded: 25
Company size
1–1045 (11%)
11–5080 (19%)
51–250123 (30%)
251–50040 (10%)
501–1,00029 (7%)
1,001–5,00045 (11%)
5,001–10,00015 (4%)
10,001+35 (8%)
Share of companies with a recorded size, by employees.
No size recorded: 77
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Frequently asked questions
About the Kamailio data on this page.
How many companies use Kamailio?
Firmable holds confirmed Kamailio detections for 489 distinct companies, 186 of them confirmed in the last 90 days. A company is counted once however many of its properties run it.
Which companies use Kamailio?
Tin Can, SpectrumVoIP and Parloa are among the most prominent in the current set.
What industries use Kamailio?
Information technology and services, media and telecommunications and professional and business services lead the set, across 17 industries in total.
What size companies use Kamailio?
Adoption concentrates in the 51-250 employee band, across the companies whose size is recorded.
Where are Kamailio users based?
The United States, Canada, Australia and the Philippines account for most detections, across 13 countries.
How current is this data?
186 companies were confirmed in the last 90 days. Last detection 14 October 2026.
