Similar to Portable_Network_Graphics

XPath

XML Base

XPointer

XQuery

XSL Formatting Objects

XSLT

Web storage

C-HTML

SPARQL

Handheld Device Markup Language

Meta element

Character entity reference

Resource Description Framework

Request for Comments

April Fools' Day Request for Comments

Internet Engineering Task Force

Character Generator Protocol

Daytime Protocol

Discard Protocol

Echo Protocol