Since the early 1990s, the business and academic communities, acting in response to the increasing demand for corporate social responsibility, have developed a vast array of frameworks intended to measure, manage, and report on social impact. Nonetheless, current frameworks are based on different notions of social impact or designed to narrowly serve the purposes of the constituents who promoted their development. Most important, they often lack empirical evidence of their efficacy. To encourage the corporate philanthropy community to use these tools and promote further research, this issue of Giving Thoughts analyzes and classifies 30 social impact measurement frameworks.