🆚 Cap vs. Human Presence

Type

Captcha service
Captcha service

About

Cap is an open-source, self-hosted reCAPTCHA alternative that verifies visitors without visual puzzles, tracking, or third-party services.

It uses a two-layer verification model that combines proof-of-work challenges accelerated with WebAssembly and Web Workers, including SHA-256 hashing and optional GPU-resistant time-locks.

Read more…

Human Presence was web security software that identified human website visitors through human behavior analysis and proprietary machine learning algorithms.

Headquarters

Lisbon, Portugal
Greenville, South Carolina, United States

Website

Pricing

Free ✔️ Open source
Shopify
Form Spam Protector $3.99/month
Checkout Protection Basic $49.99/month
Checkout Protection Plus $99.99/month
WordPress
Free version ✔️ 1 form on 1 website for 1 year
Pro $49/month
Elite $249/month
Drupal $4.99/month
Magento $4.99/month

Categories

Captchas › Rank #12
Captchas › Rank #13
Spam Protection › Rank #15
Spam Protection › Rank #17
Fraud Prevention › Rank #41

Popularity

Determined by the number of sites using each technology.

The Cap captcha service is 5 times more popular than Human Presence.
Total websites

Market share

Captchas
Spam Protection

Popularity by country

Determined by the number of sites detected from each country.

Cap is more popular in Chile, Switzerland, and Germany, while Human Presence is more popular in the United States.
Chile
United States
Switzerland
Germany
United Kingdom
Canada
France
Russia
Spain
China

Popularity by domain category

Determined by the number of sites in each category.

Cap is more popular than Human Presence in all market segments.
Marketing/Merchandising
Online Shopping
Education/Reference
Blogs/Wiki
Internet Services
Business
Health
Personal Pages
Fashion/Beauty
Art/Culture/Heritage

Top sites

Top-ranked sites that use these technologies.

Name
Rank
#125,032
#163,708
#265,405
View more ➝
Name
Rank
#930,406
#1,469,367
#1,648,781
View more ➝

See also

🗃️ About This Data