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By contrast, consider the Creative Commons license, sometimes referred to as a copyleft. The creator of a piece of intellectual property can choose to make it available under a Creative Commons license, which allows anyone to freely use the ideas provided by that license so long as the user attributes the creation of the ideas to the licensor (the owner and issuer of the license). Businesses can choose to share their intellectual property with other businesses, organizations, or individuals by means of licensing arrangements. Copyleft provides the opportunity to widely distribute an idea or a practice and, with some forethought, leads to creating a significant market share for products and services. Pixar Studios, for example, has made RenderMan, its incredibly powerful, industry-leading animation rendering software, available free of charge under a free-to-use license that is a variation of a creative commons license. In March 2019, the National Security Agency made its malware reverse engineering software, called Ghidra, publicly available (and has since issued bug fix releases to it). Both approaches reflect a savvy strategy to influence the ways in which the development of talent, ideas, and other products will happen in their respective marketplaces.