reCAPTCHA

reCAPTCHA Usage Statistics · Download List of All Websites using reCAPTCHA

Anti-bot CAPTCHA widget from Google.

CAPTCHA

RapidWeaver

RapidWeaver Usage Statistics · Download List of All Websites using RapidWeaver

Easy to create websites on your Mac

Simple Website Builder

QUIC

QUIC Usage Statistics · Download List of All Websites using QUIC

Quick UDP Internet Connections, pronounced quick is a transport layer network protocol developed by Google.

LiteSpeed

LiteSpeed Usage Statistics · Download List of All Websites using LiteSpeed

LiteSpeed web server is a high performance, highly scalable Apache interchangeable web server.

UTF-8

UTF-8 Usage Statistics

UTF-8 (8-bit UCS/Unicode Transformation Format) is a variable-length character encoding for Unicode. It is the preferred encoding for web pages.

XHTML Strict

XHTML Strict Usage Statistics

The website claims XHTML strict. XHTML Strict is the same as HTML 4.01 Strict but follows XML guidelines. See the link for more information.

Cascading Style Sheets

Cascading Style Sheets Usage Statistics

Cascading Style Sheets (CSS) is a stylesheet language used to describe the presentation of a document written in a markup language. Its most common application is to style web pages written in HTML

Javascript

Javascript Usage Statistics

JavaScript is a scripting language most often used for client-side web development.

HTTP3 Alt-Svc

HTTP3 Alt-Svc Usage Statistics

HTTP3 support test via the Alt-Svc HTTP header.