Hi Chris, thank you very much for the kind words. I stumbled over this topic in the context of embedded system development the first time as well. Using Rational Doors was not really a pleasure. The features of the software itself is not bad but lacks good UI/UX and is heavyweight. StrictDoc and Doorstop are lightweight alternatives. In a lot of other contexts in the Python world traceability provided by strictdoc can be super valuable as well and integrates way better in an agile lightweight workflow in comparison to heavyweight usual agile tool usage (Jira, etc.). Kind regards, Florian