Top Rated for IntelliJ IDEA

Power Mode II

Power Mode Based on the activate-power-mode atom plugin and forked from Baptiste Mesta on Github.

CSS-X-Fire

Connects Firebug CSS editor with any IDE with CSS capabilities (IntelliJ IDEA Ultimate, PhpStorm, WebStorm, PyCharm, RubyMine).

Grammar-Kit

BNF Grammars and JFlex lexers editor.

ToolWindow Manager

Allows availability of IDEA ToolWindow buttons to be controlled on a per-project basis.

Non Project Files Unlocker

Disables annoying dialog for unlocking non-project files - IDEA-125379.

hybris integration

This plugin is a plugin for SAP Hybris Commerce integration.

XPathView + XSLT-Support

The XPath part of the plugin provides a possibility to evaluate XPath expressions against any XML document opened in IDEA.

WicketForge

WicketForge assists developers creating Wicket applications.

Jelastic Cloud Platform Integration

Rate plugin | Free trial | Docs.