🆚 Altcha vs. MTCaptcha

Compare technologies based on real-world usage data *

Type

Captcha service
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.

MTCaptcha is a GDPR and WCAG compliant enterprise captcha service.

Headquarters

Brno, Czech Republic
Mountain View, California, United States

Website

Pricing

Free version ✔️Open source
ALTCHA Sentinel€24+/month
Free tier ✔️10K requests/month
Core (1 domain, 300K requests)$29/month
Pro (3 domains, 1M requests)$95/month
Business (6 domains, 2M requests)$170/month
EnterpriseCustom

Categories

Captchas › Rank #6
Captchas › Rank #10
Spam Protection › Rank #9
Spam Protection › Rank #12

Popularity

Determined by the number of sites using each technology.

The Altcha captcha service is 4 times more popular than MTCaptcha.
Total websites

Market share

Captchas
Spam Protection

Popularity by country

Determined by the number of sites detected from each country.

Altcha is more popular in Germany, France, and the United States, while MTCaptcha is more popular in Hong Kong, Luxembourg, and China.
Germany
France
United States
United Kingdom
Czech Republic
Switzerland
Austria
Netherlands
Sweden
Finland

Awards

Popularity by domain category

Determined by the number of sites in each category.

Altcha is more popular among sites focused on business, online shopping, and marketing and merchandising, while MTCaptcha is more commonly used on finance and banking, and government and military sites.
Business
Online Shopping
Marketing/Merchandising
Non-Profit/Advocacy/NGO
Education/Reference
Internet Services
General News
Real Estate
Software/Hardware
Public Information

Top sites

Top-ranked sites that use these technologies.

Name
Rank
#5,726
#15,520
View more ➝
Name
Rank
#8,920
View more ➝

See also

* According to recent studies, many of online reviews are fake.
When making your decision, it is better to rely on data that cannot be falsified.
Our service evaluates the popularity of technologies by the number of websites using them.

Statistics were last calculated on .
For details, see our methodology and disclaimer.