This is the current industry standard. Ladybug and Honeybee are open-source plugins that provide much deeper analysis than Ecotect ever could, using the most respected simulation engines in the world.
While the urge to find a "crack" or a free download of the 2011 version is high for students or fans of the original interface, there are significant risks and modern alternatives you should consider first. The Risks of Downloading Cracked Software
Revit Insight to help you choose your next analysis workflow?
Legal Consequences: Using unlicensed software for professional work can lead to heavy fines and damage your professional reputation. Why Ecotect 2011 is No Longer the Best Choice