Extensible Computational Chemistry Environment

The Extensible Computational Chemistry Environment (ECCE, pronounced "etch-ā") provides a sophisticated graphical user interface, scientific visualization tools, and the underlying data management framework enabling scientists to efficiently set up calculations and store, retrieve, and analyze the rapidly growing volumes of data produced by computational chemistry studies. == Major features == Support for building molecular models.

Source: Wikipedia — Extensible Computational Chemistry Environment (CC BY-SA 4.0)