Software systems are widely diverse. Each has its unique structure, stakeholders and requirements. Given this reality, often successfully extracting valuable insights from a software system requires software analyses tailored to the context of that system. This is the main goal of Moose, an open-source platform for software and data analysis: empower programmers to craft custom analyses cheaply. Instead of providing predefined tools, Moose focuses on moldable tools that enable programmers to create their own analyses. We can measure the cost of a custom analysis in terms of minutes, instead of days. This demo will show ways in which Moose can enable custom analyses. For example, we'll look into extracting dependencies between components in Angular and investigate the usage of deprecated classes in Java.