Signals Recent events at this company, such as a leadership change, funding or a new office.
Fluidstack invested into assets: AI data center in the amount of $4B in Cameron, Texas, United States, Northern America, Americas on Sep 11th '26. · 11 Sep 2026
Fluidstack expands facilities to New York, New York, United States, Northern America, Americas. · 11 Sep 2026
A breakdown of the 899 companies running authentik.
Top industries
Information technology and services330
Education and training86
Professional and business services65
Art, sports and recreation45
Industrial and manufacturing40
Financial services32
Media and telecommunications31
Construction and building30
No industry recorded: 119
Company size
1–10140 (22%)
11–50193 (30%)
51–250160 (25%)
251–50044 (7%)
501–1,00018 (3%)
1,001–5,00048 (7%)
5,001–10,00016 (2%)
10,001+27 (4%)
Share of companies with a recorded size, by employees.
No size recorded: 253
Versions detected
10 versions across the confirmed companies. Counts are distinct companies seen running that version.
2026.5.621
2026.8.318
2026.2.211
2026.8.011
2026.8.111
2026.8.211
2026.2.110
2026.5.310
2026.5.28
2026.5.48
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 authentik data on this page.
How many companies use authentik?
Firmable holds confirmed authentik detections for 899 distinct companies, 889 of them confirmed in the last 90 days. A company is counted once however many of its properties run it.
Which companies use authentik?
General Catalyst, Fluidstack and Spectro Cloud are among the most prominent in the current set.
What industries use authentik?
Information technology and services, education and training and professional and business services lead the set, across 19 industries in total.
What size companies use authentik?
Adoption concentrates in the 11-50 employee band, across the companies whose size is recorded.
Where are authentik users based?
The United States, Canada, Australia and Indonesia account for most detections, across 13 countries.
How current is this data?
889 companies were confirmed in the last 90 days. Last detection 14 October 2026.
