🆚 Cap vs. Yandex SmartCaptcha
Cap
Yandex SmartCaptchaType
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.
Yandex SmartCaptcha is a captcha and bot protection service from the Russian technology company Yandex.
It analyzes requests using behavioral and risk-based signals, supports invisible verification that challenges only suspicious users, and offers multiple challenge types including checkboxes, sliders, text recognition, silhouettes, and kaleidoscope puzzles.
Headquarters
Pricing
Categories
Popularity
Determined by the number of sites using each technology.
Market share
Popularity by country
Determined by the number of sites detected from each country.
Awards
- 🥈 Second most popular in Russia in the Captchas category.
- 🥉 Third most popular in Russia in the Spam Protection category.
Popularity by domain category
Determined by the number of sites in each category.
Top sites
Top-ranked sites that use these technologies.
Compare alternatives
Technologies with similar characteristics.
hCaptcha
Cloudflare Turnstile
Friendly Captcha
Altcha
Yandex company profile🗃️ 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 3,604,716 websites. However, data for Cap is still being collected and reflects a smaller subset of sites.
- Statistics were last calculated on .
- For more details, see our methodology and disclaimer.