⚡ Spam Protection

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

These solutions often use challenge-response tests, content scanning, email obfuscation, and behavioral analysis to distinguish real users from automated threats.

According to our statistics, spam protection software is used on 17.5% of all websites.
87.2% of these sites use only one spam protection software solution, 11.2% use two, and 1.7% use three or more simultaneously.

Statistics based on 3.6M+ analyzed websites. About this data

⭐ Most Popular in 2026

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

The most popular is reCAPTCHA, which dominates the market with a substantial 55.5% share.
It is followed by Cloudflare Email Obfuscation with 26.6% and hCaptcha with 18%.

reCAPTCHA 55.5%
Cloudflare Email Obfuscation 26.6%
hCaptcha 18%
Cloudflare Turnstile 7.3%
Akismet 3.6%
CleanTalk 2.8%
Yandex SmartCaptcha 0.2%
Friendly Captcha 0.2%
Altcha 0.1%
GeeTest 0.05%
Tencent Captcha 0.03%
MTCaptcha 0.03%
Yidun Captcha 0.02%
BitNinja 0.02%
Human Presence 0.004%

You can also drill down by country:

🚀 Country Highlights

Here is a list of solutions that is especially popular in certain countries.
Differences between global and country rankings are shown in parentheses.

Cloudflare Email Obfuscation is #1 in Thailand ^(-1)
hCaptcha is #1 in Pakistan ^(-2)
Cloudflare Turnstile is #2 in Japan ^(-2)
Yandex SmartCaptcha is #3 in Russia ^(-4)
Akismet is #3 in Vietnam ^(-2)
CleanTalk is #5 in the United Kingdom ^(-1)
Friendly Captcha is #5 in Germany ^(-3)

✨ Best Spam Protection Software

Below is a more detailed list of 18 spam protection software solutions we detect, 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	55.5%
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	26.6%
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	18%
4	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$$$	7.3%
5	Akismet San Francisco, California, United States A comment spam filtering service originally developed for WordPress that can also be integrated with other CMS and forums. Free$14.95/month	3.6%
6	CleanTalk Carson City, Nevada, United States A cloud-based anti-spam service that protects websites from automated spam in online forms, comments, and registrations. $12+/year	2.8%
7	Yandex SmartCaptcha Moscow, Russia A captcha and bot protection service from the Russian technology company Yandex. Free tier$0.80	0.2%
8	Friendly Captcha Woerthsee, Germany A European captcha service that protects websites from bots and automated abuse while prioritizing user privacy, security, and accessibility. Free€9+/month	0.2%
9	Altcha Brno, Czech Republic An open-source, privacy-first, self-hosted captcha alternative that uses a proof-of-work mechanism to protect websites, APIs, and online services from spam and unwanted content. FreeOpen source€99+/month	0.1%
10	GeeTest Wuhan, China A Chinese bot management and CAPTCHA platform that uses behavioral analysis, machine learning, and device fingerprinting to distinguish human users from automated traffic. $$$	0.05%
11	Tencent Captcha Shenzhen, China Provides web and app developers with comprehensive human verification services through slider CAPTCHAs. Free tier$0.005+	0.03%
12	MTCaptcha Mountain View, California, United States An enterprise captcha service that provides bot detection and human verification with a focus on GDPR compliance and accessibility. Free$29+/month	0.03%
13	Yidun Captcha Hangzhou, China A captcha service provided by the Chinese company NetEase.	0.02%
14	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	0.02%
15	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	0.004%
⏳	Cap Lisbon, Portugal An open-source, self-hosted reCAPTCHA alternative that verifies visitors without visual puzzles, tracking, or third-party services. FreeOpen source	0.002%
17	Castle New York, United States A fraud prevention platform that helps businesses block bad bots, account takeovers, transaction fraud, and spam. Free$200+/month	0.002%
18	Vaptcha China A new type of human-machine verification solution based on AI and Big Data. Free$$$	0.001%

🗃️ 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 3,629,123 websites.
We currently track the presence of 18 spam protection software solutions across the web.
Statistics were last calculated on August 13, 2026.
For more details, see our methodology and disclaimer.