The software is available in form of a source code on SourceForge, but to actually download it, you need a Facebook account since the latest releases are posted on a closed group called Option Trading Course. You need to be a member, but according to some sources you can apply and access will be granted, then the files will be available on the Files tab.
The latest version is compatible with Windows 10 operating system as well. Follow the link below to access the group's URL: https://www.facebook.com/groups/OptionTradingCourse/