HTML 4 / 4.01 Strict Usage Statistics

The website claims HTML 4 Strict. HTML 4 extends HTML with mechanisms for style sheets, scripting, frames, embedding objects, improved support for right to left and mixed direction text, richer tables, and enhancements to forms, offering improved accessibility for people with disabilities.

http://www.w3.org/TR/html401/

Document Standards

HTML 4 / 4.01 Strict Awards