iAIDA is a C++ implementation of the AIDA interfaces.
iAIDA is an implementation in C++ of the AIDA Abstract Interfaces for Data Analysis, a set of interfaces designed for data analysis. Initially designed for use in experimental and theoretical physics, the AIDA interfaces can also be used in other fields.
The Central Library is a mathematics library written in C++.
The ESCL is a class library that can be used to develop electronic structure codes like those that are used in computational condensed matter physics. An object-oriented approach is suitable since real-world items like atoms and electrons are modeled.