W3C is pleased to announce the release of Unicorn, a one-stop tool to help people improve the quality of their Web pages. Unicorn combines a number of popular tools in a single, easy interface, including the Markup validator, CSS validator, mobileOk checker, and Feed validator, which remain available as individual services as well. W3C invites developers to enhance the service by creating new modules and testing them in our online developer space (or installing Unicorn locally).

The Web Applications Working Group invites implementation of the Candidate Recommendation of XMLHttpRequest. The XMLHttpRequest specification defines an API that provides scripted client functionality for transferring data between a client and a server. Learn more about the Rich Web Client Activity.

The RDFa Working Group has just published two Working Drafts: RDFa Core 1.1 and XHTML+RDFa 1.1. RDFa Core 1.1 is a specification for attributes to express structured data in any markup language. The embedded data already available in the markup language (e.g., XHTML) is reused by the RDFa markup, so that publishers don't need to repeat significant data in the document content. XHTML+RDFa 1.1 is an XHTML family markup language. That extends the XHTML 1.1 markup language with the attributes defined in RDFa Core 1.1. This document is intended for authors who want to create XHTML-Family documents that embed rich semantic markup. Learn more about the Semantic Web Activity.

The XHTML2 Working Group has published a W3C Recommendation of XHTML Modularization 1.1 - Second Edition. XHTML Modularization is a tool for people who design markup languages.

The Multimodal Interaction Working Group has published a Working Draft of Emotion Markup Language (EmotionML) 1.0. As the web is becoming ubiquitous, interactive, and multimodal, technology needs to deal increasingly with human factors, including emotions