Cybersecurity and cyber power have grown in importance as a way of mitigating risks and threats and maintaining a secure and reliable cyberspace. Several methodologies have been proposed to measure the cybersecurity and cyber power of nation states from different perspectives. In this study, the global indices and studies for assessing cybersecurity and cyber power were analyzed and compared in terms of their comprehensiveness and strength for measuring country-level capabilities. A conceptual framework covering all of the indicators of well-known indices was developed for comparison, and it can also be used as a new model to measure cyber capabilities at a national level. This study is unique in terms of the number and diversity of the indices as well as the scope and depth of the comparison since it analyzed most of the well-known country-level cybersecurity and cyber power indices as well as a maturity model at the indicator level depth. The study provides an extensive list of the categories and indicators and thereby improves comprehension of the elements of cybersecurity and cyber power with the comparison and mappings of widely used indices.