ROOTf

ROOTf is a cross-platform, object-oriented framework developed at CERN, primarily designed for data acquisition, storage, and analysis in high-energy physics experiments. It is written in C++ and provides a comprehensive set of tools for handling large datasets, including a sophisticated data structure called a "TTree" which is optimized for efficient storage and retrieval of columnar data. ROOTf also includes a built-in C++ interpreter, known as CINT, which allows users to interact with and analyze data directly from the command line without recompiling the entire program. This interpreter facilitates rapid prototyping and interactive data exploration. The framework offers extensive capabilities for data visualization, with a powerful plotting library that can generate various types of graphs and histograms. Furthermore, ROOTf is extensible, allowing developers to create custom classes and functions to suit specific analysis needs. It is widely used in the high-energy physics community, serving as the de facto standard for data processing in many major experiments at facilities like the Large Hadron Collider. Its open-source nature and continuous development have ensured its longevity and ongoing relevance in the field.