Atomistix ToolKit

QuantumATK (formerly Atomistix ToolKit or ATK) is a commercial software for atomic-scale modeling and simulation of nanosystems. The software was originally developed by Atomistix A/S, and was later acquired by QuantumWise following the Atomistix bankruptcy. QuantumWise was then acquired by Synopsys in 2017.

Atomistix ToolKit is a further development of TranSIESTA-C, which in turn is based on the technology, models, and algorithms developed in the academic codes TranSIESTA, and McDCal, employing localized basis sets as developed in SIESTA.