🆚 Altcha vs. Friendly Captcha

Compare technologies based on real-world usage data *

📈 Friendly Captcha is twice as popular as Altcha.
🌍 Friendly Captcha is more popular in Germany, Austria, and the Netherlands.
🌎 Altcha is more popular in France, the United Kingdom, and the United States.

Altcha

Friendly Captcha

Type

Captcha service

About

Altcha is 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.

Friendly Captcha is a European captcha service that protects websites from bots and automated abuse while prioritizing user privacy, security, and accessibility.

It uses a proof-of-work approach that runs in the background without image challenges or tracking cookies, complies with GDPR by avoiding personal data collection, works without user interaction in most cases, and supports WCAG accessibility requirements.

Headquarters

Brno, Czech Republic

Woerthsee, Germany

Website

altcha.org #175,575

friendlycaptcha.com #56,350

Pricing

Free version ✔️Open source

ALTCHA Sentinel€24+/month

Free version ✔️Non-commercial use, 1K requests/month

Starter (1 domain, 1K requests)€9/month

Growth (5 domains, 5K requests)€39/month

Advanced (50 domains, 50K requests)€200/month

EnterpriseCustom

Popularity

Determined by the number of sites using each technology.

The Friendly Captcha service is 2.2 times more popular than Altcha.

Total websites

Market share

Captchas

Spam Protection

Popularity by country

Determined by the number of sites detected from each country.

Friendly Captcha is more popular in Germany, Austria, and the Netherlands, while Altcha is more popular in France, the United Kingdom, and the United States.

Germany

Austria

France

Netherlands

Switzerland

United Kingdom

United States

Sweden

Czech Republic

Spain

Awards

⭐ 4th most popular in France in the Captchas category.
⭐ 4th most popular in the United Kingdom in the Captchas category.
⭐ 4th most popular in the Czech Republic in the Captchas category.
⭐ 5th most popular in Germany in the Captchas category.
⭐ 5th most popular in the United States in the Captchas category.

⭐ 4th most popular in Germany in the Captchas category.
⭐ 4th most popular in Austria in the Captchas category.
⭐ 4th most popular in the Netherlands in the Captchas category.
⭐ 4th most popular in Switzerland in the Captchas category.
⭐ 4th most popular in Sweden in the Captchas category.

Popularity by domain category

Determined by the number of sites in each category.

Friendly Captcha is more popular among sites focused on business, online shopping, and marketing and merchandising, while Altcha is more commonly used on general news and blogs and wiki sites.

Business

Online Shopping

Marketing/Merchandising

Finance/Banking

Health

Education/Reference

Non-Profit/Advocacy/NGO

Software/Hardware

Internet Services

Real Estate