Current Customer(s)
Market Share (Est.)
Ranking
The top three of Castle’s competitors in the Web And Mobile Application Security category are reCAPTCHA Enterprise with 60.31%, WordFence with 28.49%, Imperva with 4.12% market share.
Popular Comparisons
The top three of Castle’s competitors in the Web And Mobile Application Security category are reCAPTCHA Enterprise with 60.31%, WordFence with 28.49%, Imperva with 4.12% market share.
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Around the world in 2026, over 59 companies have started using Castle as Web And Mobile Application Security tool.
| Customers | Employee Range | City | Region | Country | Social Links |
|---|---|---|---|---|---|
| Atlassian | 10,000+ | Sydney | New South Wales | Australia | |
| AARP | 10,000+ | Washington, D.C. | Washington, D.C. | United States | |
| Takeda | 10,000+ | Tokyo | Tokyo | Japan | |
| Oracle Corporation | 10,000+ | Austin | Texas | United States | |
| Samsung | 10,000+ | Suwon | Gyeonggi-do | Korea | |
| GoTo | 10,000+ | Pasadena | California | United States | |
| Serpro | 10,000+ | Brasilia | Federal District | Brazil | |
| McAfee | 10,000+ | San Jose | California | United States | |
| Universidade Federal De Santa Catarina | 5,000 - 9,999 | Florianopolis | Santa Catarina | Brazil | |
| Canva | 5,000 - 9,999 | Sydney | New South Wales | Australia |
The top three products and services offering customers that use Castle for Web And Mobile Application Security are Saas (5), Fintech (4), Technology (4).
Customers
The majority of Castle's customers for the web-and-mobile-application-security category fall in the company size of 10,000+ employees (11 companies), 100 - 249 employees (11 companies), 500 - 999 employees (10 companies).
Employee Size
The top three geographies of Castle for web-and-mobile-application-security are the United States with 36(64.29%), Australia with 5(8.93%), Brazil with 4(7.14%) customers respectively.
Customers
Find answers to the most often asked questions by users.
Who are the top Castle competitors?
Castle’s Top competitors in the web-and-mobile-application-security category are reCAPTCHA Enterprise, WordFence, Imperva. You can view a full list of Castle competitors here. 6sense uses advanced data mining and AI algorithms to track customers and competitors of Castle and 40,000 other technologies on the internet. You can also compare Castle and its feature with top competitors here : Castle vs reCAPTCHA Enterprise Castle vs WordFence Castle vs Imperva.
What is Castle customer distribution based on company size?
What is Castle market share in the web-and-mobile-application-security?
What are the top countries that use Castle?
What are the top industries that use Castle?
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