A breakdown of the 765 companies running Open WebUI.
Top industries
Information technology and services261
Education and training88
Professional and business services86
Industrial and manufacturing37
Financial services31
Construction and building17
Art, sports and recreation16
Hospitality and travel11
No industry recorded: 158
Company size
1–10144 (29%)
11–50117 (24%)
51–25098 (20%)
251–50027 (5%)
501–1,00021 (4%)
1,001–5,00048 (10%)
5,001–10,00018 (4%)
10,001+24 (5%)
Share of companies with a recorded size, by employees.
No size recorded: 268
One dataset. Four ways to sell.
Match the deepest technology intelligence against the most comprehensive data on companies and people – such as who is growing, raised capital or changed role – for pinpoint precision on GTM campaigns.
Competitor displacement
Find the accounts running a competitor today and go after them with the right argument.
Complementary tools
Target companies whose stack sits alongside yours and integrates without a fight.
Service partners
Identify implementers and agencies already working in the technologies you support.
Market insights
Map your total addressable market and track aggregated trends such as AI maturity.
Frequently asked questions
About the Open WebUI data on this page.
How many companies use Open WebUI?
Firmable holds confirmed Open WebUI detections for 765 distinct companies, 746 of them confirmed in the last 90 days. A company is counted once however many of its properties run it.
Which companies use Open WebUI?
Leopardo Construction, Compare Club and Maryland Legal Aid are among the most prominent in the current set.
What industries use Open WebUI?
Information technology and services, education and training and professional and business services lead the set, across 19 industries in total.
What size companies use Open WebUI?
Adoption concentrates in the 1-10 employee band, across the companies whose size is recorded.
Where are Open WebUI users based?
The United States, Australia, Canada and Japan account for most detections, across 13 countries.
How current is this data?
746 companies were confirmed in the last 90 days. Last detection 13 October 2026.
More Self-hosted LLM serving & chat UI technologies
