A breakdown of the 163K+ companies running Prototype.js.
Top industries
Art, sports and recreation17K+
Retail trade15K+
Industrial and manufacturing15K+
Professional and business services14K+
Construction and building10K+
Health and wellness7.9K+
Information technology and services7.5K+
Hospitality and travel7.1K+
No industry recorded: 28K+
Company size
1–1024,834 (35%)
11–5019,628 (28%)
51–25016,420 (23%)
251–5004,686 (7%)
501–1,0001,401 (2%)
1,001–5,0002,142 (3%)
5,001–10,000439 (1%)
10,001+533 (1%)
Share of companies with a recorded size, by employees.
No size recorded: 93K+
Versions detected
10 versions across the confirmed companies. Counts are distinct companies seen running that version.
1.7.2898
1.6.165
1.6.0.324
1.715
1.4.08
1.6.0.27
1.7.36
1.64
13
1.3.13
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Competitor displacement
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Market insights
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Frequently asked questions
About the Prototype.js data on this page.
How many companies use Prototype.js?
Firmable holds confirmed Prototype.js detections for 163,330 distinct companies, 81,247 of them confirmed in the last 90 days. A company is counted once however many of its properties run it.
Which companies use Prototype.js?
Smartbank, Centuria Capital Group and PAG are among the most prominent in the current set.
What industries use Prototype.js?
Art, sports and recreation, retail trade and industrial and manufacturing lead the set, across 19 industries in total.
What size companies use Prototype.js?
Adoption concentrates in the 1-10 employee band, across the companies whose size is recorded.
Where are Prototype.js users based?
The United States, Australia, Canada and Japan account for most detections, across 13 countries.
How current is this data?
81,247 companies were confirmed in the last 90 days. Last detection 14 October 2026.
