🆚 Altcha vs. Tencent Captcha

Compare technologies based on real-world usage data *

📈 Altcha is three times more popular than Tencent Captcha.
🌎 Altcha is more popular in Germany, France, and the United States.
🌍 Tencent Captcha is more popular in China, Hong Kong, and Singapore.

Altcha

Tencent 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.

Tencent Captcha provides web and app developers with comprehensive human verification services through slider CAPTCHAs.

Headquarters

Brno, Czech Republic

Shenzhen, China

Website

altcha.org #175,575

tencentcloud.com #67,733

Pricing

Free version ✔️Open source

ALTCHA Sentinel€24+/month

Free tier ✔️Free trial: 10,000 free verifications per month

Pay-as-you-go, tiered, per verificationUp to 100 per day$0.005
Up to 1K per day$0.0008
Up to 10K per day$0.0008
Up to 100K per day$0.0002
Up to 1M per day$0.0001
More then 1M per day$0.00005

Popularity

Determined by the number of sites using each technology.

The Altcha captcha service is 3 times more popular than Tencent Captcha.

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 Tencent Captcha is more popular in China, Hong Kong, and Singapore.

China

Germany

France

United States

United Kingdom

Czech Republic

Switzerland

Hong Kong

Austria

Poland

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.

🥉 Third most popular in China in the Captchas category.
⭐ 4th most popular in China in the Spam Protection category.
⭐ 4th most popular in Hong Kong in the Captchas category.
⭐ 5th most popular in Hong Kong in the Spam Protection category.

Popularity by domain category

Determined by the number of sites in each category.

Altcha is more popular among sites focused on business, marketing and merchandising, and online shopping, while Tencent Captcha is more commonly used on games, job search, and portal sites sites.

Business

Marketing/Merchandising

Online Shopping

Education/Reference

Internet Services

Non-Profit/Advocacy/NGO

General News

Real Estate

Software/Hardware

Travel