Hello thank you very much. I am aware of django-fsm (and it's sister project django-viewflow) but I haven't used it in my projects that's why I didn't include it in the list - all the other packages have been used and tested extensively in various projects so I can vote for them.

Some projects that I had implemented and used workflows were implemented with custom flows (by hand) using django-rules-light to keep a lid on who can do what on each state.

django-fsm is definitely one of the packages I am going to use in future projects that require extensive workflows.