Gradle is an open-source build automation tool focused on flexibility and performance. Gradle build scripts are written using a Groovy or Kotlin DSL.
DataMelt (DMelt), is a platform for numeric computation, data analysis, statistics and data visualization. DMelt can be used for analysis of large data volumes, data mining, statistical analyses and math computations. DMelt creates high-quality vector-graphics images (SVG, EPS, PDF) that can be included in LaTeX and other text-processing systems. This computational platform can be used with Python (Jython), Java, Groovy, Ruby (JRuby), BeanShell and Octave programming languages.
SCaVis is an environment for scientific computation, data analysis and data visualization designed for scientists, engineers and students. While itself implemented in Java, it provides bindings for Jython, Groovy, JRuby, BeanShell or Matlab/Octav for symbolic calculations. It features chart plotting, histograms, advanced statistics, symbolic calculations, data analysis, mathematical functions, data mining, linear algebra and plots.
FileBot can automatically rename tv show / movie files, and download subtitles. It requires little work, as media files can just be drag'n'dropped in for operation. It's cross-platform and comes with a command-line version.