In today's rapidly evolving landscape, an array of tools and techniques have emerged, each aimed at the ambitious task of measuring the performance of software developers. To delve into this intricate realm, it's essential to approach the subject from a multifaceted perspective. By examining various viewpoints—ranging from quantitative and qualitative analyses to the lens of agile metrics and individual expectations—we can gain a comprehensive understanding of these attempts to evaluate the multifarious dimensions of developers' contributions.