Does NarraFirma support story work that isn’t participatory narrative inquiry?

It’s hard to say. You might not use a lot of what is in the software, but it’s flexible, and nothing is required. On the other hand, there are many aspects of NarraFirma that assume you will be collecting stories and answers to questions about them. My advice is to look at the example NarraFirma project on this web site (click Try It) and see if you think it will work for what you want to do.