The software for chemical interaction networks (SCINE) aims to offer developments for 21st-century computational quantum chemistry.
A central idea underpinning the design of SCINE is the automated exploration of chemical reaction networks with interactive steering. Reaching this goal has required new developments in many traditional branches of quantum chemistry. SCINE is intended to provide a unifying framework for all these developments.

SCINE is wirtten in C++ (C++14) with a Python3 interface and the released parts of the source code are hosted on GitHub (link)

For more information see the official SCINE website https://scine.ethz.ch/, or the online developers documentation.