The turbines: contains over 100 of the world's most popular 1MW+ wind turbines in current use. Manufacturers include Vestas, Gamesa, Sinovel, Repower, Suzlon, GE, Goldwind and Siemens.
The glossary: is a list of the current terms in use, such as descriptions for foundations, turbine components and energy terms.
MWCalc: a simple tool to calculate the GWh output of a wind farm (or cluster) over a year. Likewise, it can work backwards and produce the MW needed to produce a certain MWh.
Straightforward and handy app - and free!