of HAADF, ADF, ABF-STEM, as well as conventional TEM and CBED. The executable and source code are available as a free download on the Koch group website. STEM-CELL This is a code written by Dr Vincenzo Grillo of the Institute for Nanoscience (CNR) in Italy. This code is essentially a graphical frontend to the multislice code written by Kirkland, with more additional features. These include tools to generate complex crystalline structures, simulate HAADF images and model the STEM probe, as well as modeling of strain in materials. Tools for image analysis (e.g. GPA) and filtering are also available. The code is updated quite often with new features and a user mailing list is maintained. Freely available on their website. DR. PROBE Multi-slice image simulations for high-resolution scanning and coherent imaging transmission electron microscopy written by Dr. Juri Barthel from the Ernst Ruska-Centre at the Jülich Research Centre. The software comprises a graphical user interface version for direct visualization of STEM image calculations, as well as a bundle of command-line modules for more comprehensive calculation tasks. The programs have been written using Visual C++, Fortran 90, and Perl. Executable binaries for Microsoft Windows 32-bit and 64-bit operating systems are available for free from the website. clTEM OpenCL accelerated multislice software written by Dr. Adam Dyson and Dr. Jonathan Peters from University of Warwick. clTEM is under development as of October 2019. cudaEM cudaEM is a multi-GPU enabled code based on CUDA for multislice simulations developed by the group of Prof. Stephen Pennycook. References Microscopy Mathematical modeling