Apache HTTP Server - Apache httpd has been the most popular web server on the Internet since April 1996
hCaptcha - Do you use a captcha to keep out bots? hCaptcha is a drop-in replacement for reCAPTCHA that earns website owners money and helps companies get their data labeled.
Apache Tomcat - An open source software implementation of the Java Servlet and JavaServer Pages technologies
GeeTest CAPTCHA - GeeTest protects your websites, mobile Apps and APIs from bot threats.
LiteSpeed Web Server - LiteSpeed Web Server (LSWS) is a high-performance Apache drop-in replacement.
reCAPTCHA - reCAPTCHA is a free security service that protects your websites from spam and abuse.