The Tudat software was created at the Astrodynamics & Space Missions Section (AS) at TU Delft, as a generic C++ tool for astrodynamics research and education. Since 2020, a Python interface named Tudatpy, has been developed.
The core of the software is numerical state propagation and estimation, as well as basic mission design functionality. It has been used for research publications over a wide range of topics, and is embedded in the TU Delft Spaceflight M.Sc. curriculum. The software is disseminated as a conda package.
The interested reader is referred to https://docs.tudat.space/ for more information.
The code for Tudat is hosted on GitHub (https://github.com/tudat-team/), under open-source BSD 3-clause license, with its functionality covered by >200 unit tests.
Dr.ir. D. (Dominic) Dirkx