The wind and water power software on this website are developed as free, publicly available, open-source, professional-grade products and are used by thousands of designers, manufacturers, consultants, certifiers, researchers, educators, and students throughout the world. The open-source format facilitates the software’s credibility and adaptability by the community.  Most software are modular, documented, and supported through workshops and an online forum. Most software downloads include source code, a compiled executable, documentation, and sample input files.  Most software have been verified through model-to-model comparisons and validated with test measurements; some have been certified by third parties.

We have divided the software on this site into three categories:

The same software can also be accessed directly by technology type: