🆚 AddThis vs. KeyCAPTCHA

Compare technologies based on real-world usage data *
AddThis
KeyCAPTCHA

Type

Legacy technology
Legacy technology

About

AddThis was a social bookmarking service that discontinued its services on May 31, 2023.

KeyCAPTCHA was a jigsaw puzzle captcha service with plugins for 19 popular content management systems. It operated from 2010 until its shutdown in September 2025.

Headquarters

Austin, Texas, United States
Russia

Pricing

Free ✔️
Free version ✔️
Magnetic CAPTCHA$2+/month
Personal CAPTCHA$2+/month
M+ CAPTCHA$2+/month
Unbranded$2+/month

Categories

Legacy › Rank #6
Legacy › Rank #113

Popularity

Determined by the number of sites using each technology.

AddThis legacy technology is 12,931 times more popular than KeyCAPTCHA.
Total websites

Market share

Legacy

Popularity by country

Determined by the number of sites detected from each country.

AddThis is more popular than KeyCAPTCHA in all countries.
United States
United Kingdom
France
Netherlands
Italy
Spain
Brazil
Australia
Canada
Germany

Awards

Popularity by domain category

Determined by the number of sites in each category.

AddThis is more popular than KeyCAPTCHA in all market segments.
Business
Online Shopping
Marketing/Merchandising
Blogs/Wiki
Education/Reference
Entertainment
Travel
Internet Services
Health
Non-Profit/Advocacy/NGO

Top sites

Top-ranked sites that use these technologies.

Name
Rank
#88
#1,556
#1,629
#1,738
#1,760
View more ➝
Name
Rank
#25,724

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.