⚡ Spam Protection in the United States

Anti-spam software is a variety of tools that protect websites from automated bots and malicious content.

The United States of America (USA) is a North American country with a population of over 341 million people.

According to our statistics, spam protection software is used on 18% of websites from the United States.

Statistics based on 598K+ analyzed websites. About this data

⭐ Most Popular in 2026

The following chart shows the top spam protection software in the United States in 2026, based on market share.

The most popular is reCAPTCHA, which dominates the market with a substantial 60.9% share.
It is followed by Cloudflare Email Obfuscation with 23.3% and hCaptcha with 14.3%.

reCAPTCHA 60.9%
Cloudflare Email Obfuscation 23.3%
hCaptcha 14.3%
Akismet 7.6%
Cloudflare Turnstile 7%
CleanTalk 5.2%
Altcha 0.04%
GeeTest 0.02%
Friendly Captcha 0.02%
MTCaptcha 0.01%
BitNinja 0.01%
Yidun Captcha 0.007%
Tencent Captcha 0.006%
Human Presence 0.006%
Castle 0.004%

🚀 Highlights

Here is a list of the top solutions that is more popular in the United States than worldwide.
Differences between global and country rankings are shown in parentheses.

4. Akismet ^(-1)
7. Altcha ^(-2)
8. GeeTest ^(-2)
10. MTCaptcha ^(-2)
11. BitNinja ^(-3)
12. Yidun Captcha ^(-1)
14. Human Presence ^(-1)
15. Castle ^(-1)

✨ Best Spam Protection Software

Below is a more detailed list of 16 spam protection software solutions used on sites from the United States, ranked by their market share.

Rank	Name	Market share
1	reCAPTCHA Mountain View, California, United States A Google service that protects websites from spam, fraud, and automated abuse by distinguishing human users from bots. Free tier$8+/month	60.9%
2	Cloudflare Email Obfuscation San Francisco, California, United States Cloudflare Email Address Obfuscation hides email addresses on web pages from bots by encrypting them. Free$25+/month	23.3%
3	hCaptcha San Francisco, California, United States A security service for detecting and preventing human and automated abuse on websites and applications, often used as a drop-in alternative to reCAPTCHA. Free$99+/month	14.3%
4	Akismet San Francisco, California, United States A comment spam filtering service originally developed for WordPress that can also be integrated with other CMS and forums. Free$14.95/month	7.6%
5	Cloudflare Turnstile San Francisco, California, United States A user-friendly CAPTCHA alternative that verifies human visitors without requiring them to solve interactive puzzles or identify objects. Free$$$	7%
6	CleanTalk Carson City, Nevada, United States A cloud-based anti-spam protection service that protects websites from spambots. $12+/year	5.2%
7	Altcha Brno, Czech Republic An open-source, privacy-first, self-hosted captcha alternative that uses a proof-of-work mechanism to protect websites, APIs, and online services from spam and unwanted content. FreeOpen source€99+/month	0.04%
8	GeeTest Wuhan, China A Chinese provider of CAPTCHA and bot management solutions. $$$	0.02%
9	Friendly Captcha Woerthsee, Germany A European captcha service that protects websites from bots and automated abuse while prioritizing user privacy, security, and accessibility. Free€9+/month	0.02%
10	MTCaptcha Mountain View, California, United States A GDPR and WCAG compliant enterprise captcha service. Free tier$29+/month	0.01%
11	BitNinja Debrecen, Hungary A server security suite with a centralized dashboard containing an AI-powered Linux malware scanner, IP reputation, WAF, and spam detection. Free$5+/month	0.01%
12	Yidun Captcha Hangzhou, China A captcha service provided by the Chinese company NetEase.	0.007%
13	Tencent Captcha Shenzhen, China Provides web and app developers with comprehensive human verification services through slider CAPTCHAs. Free tier$0.005+	0.006%
14	Human Presence Greenville, South Carolina, United States Web security software that identified human website visitors through human behavior analysis and proprietary machine learning algorithms. Free$3.99+/month	0.006%
15	Castle New York, United States A fraud prevention platform that helps businesses block bad bots, account takeovers, transaction fraud, and spam. Free$200+/month	0.004%
16	Yandex SmartCaptcha Moscow, Russia A captcha service from the Russian company Yandex. Free tier$0.80	0.002%

👉 See Also

🌎 Spam Protection in other countries

🗃️ About This Data

We evaluate the popularity of technologies based on the number of websites where we detect their usage.
Technologies without a detectable web footprint, and those we do not track, are not reflected in the calculated market share.
This report is based on the analysis of 598,456 websites from the United States.
We currently track the presence of 17 spam protection software solutions across the web.
Of these, 16 were detected on websites from the United States.
Statistics were last calculated on May 14, 2026.
For more details, see our methodology and disclaimer.