Too many people are trying to build a better mousetrap. I don't understand this questing for a stage management "killer app." We already have a full-featured, flexible system that takes years to master and is rarely used to its fullest potential. There are thousands of manuals and guides, week and month long courses on how to use it. It lets you make prompt scripts, time breaks, create scene breakdowns, track absences and generate nearly any type of paperwork ever seen in a theatre. Any intern can pick up its output and use it. It doesn't cost our employers anything extra since they probably already have it loaded. It runs on Macs, PCs and portables. The only thing it doesn't do well is notate our own blocking hieroglyphics, but a handwriting font could ameliorate that quickly.
I'm talking about MS Office. (And Google Drive and LibreOffice/OpenOffice and iWork.)
If it makes you feel better you can call it the Redmond Stage Manager Automation Extravaganza v. 10.4.96b (or Stagmatex if you're feeling all web 2.0), but I've yet to see any of these tools that can beat it. Yes, it's old and sometimes frumpy, but it is also a kickass masterpiece of code. True expert users of the Office suite are just as awe-inspiring as automation experts.
Yes, there are industry-specific apps out there for other parts of the backstage world (lighting, sound, box office, playwriting), but their disciplines are far more focused than ours. Cross-disciplinary jobs like SM & PM need more general applications. I think that in watching the designers & techs play with their toys we got jealous and loset sight of the fact that we did the perfect stage manager thing and cross-purposed our own tool long before they did.
Here's the thing about software designers. They did very well selling stuff to the rest of the backstage world, and don't like to see a division that they can't sell to. They want to make something sexy and flashy that they can promote to us at all of those tech conferences that we are never invited to attend.
So they try to come up with something that suits us, and run headlong into the problem that has been plaguing me for 13 years now: we don't need it. There are no advertisers who are even interested in buying banners on SMNetwork because y'all don't need anything. The job requires you to think outside the box, work efficiently and use things in bizarre ways (see also: rehearsal props). Reinventing the wheel for a software program runs contrary to our very natures.