New and Updated for PhpStorm

W3C Validators

Adds ability to validate CSS and HTML pages with well-known W3C validation services.

Less

Supports LESS dialect of CSS that extends it with dynamic behavior such as variables, mixins, operators and functions.

Task Management

Enables task and context management.

Settings Repository

Supports sharing settings between installations of IntelliJ Platform based products used by the same developer (or team) on different computers.

Window Layout Manager

This plugin provides multi layout support for the IntelliJ based IDE of your choice. You can store up to four layouts with a meaningful name.

Stylus

Supports Stylus, a feature-rich CSS language for nodejs.

XSLT Debugger

Allows interactive debugging of XSLT stylesheets.

EditorConfig

Supports storing code formatting settings inside EditorConfig files, as well as editing EditorConfig files.

Perforce

Allows working with Perforce version control system.