Qt software: WSC is a proud supporter and commercial license holder of the Qt graphics library, used by our Sirius package and other software. For more information, see: https://www.qt.io
New software: A new version of Sirius (rev. 1.16) and of SedSimple and SedAux (rev1.17) are available for Windows as of October 2025. Log in and select Software → Downloads from the main menu.
