@ElDirector If we're going to do an Open Movie (which is a great idea, BTW) we need to get a great screenplay. Now a friend of mine is a professional screenwriter from Zimbabwe and we're working on some terrific stuff right now. We have several short screenplays ranging from a nice little ghost story to a short thriller with a twist. He's also written a couple of full-length screenplays.
Unlike Blender's movies which are technically excellent but lack in every other aspect - Tears of Steel being particularly bad in this regard - our stuff is squarely aimed at the ultra-low-budget end of the market but with production values that mirror those of Independent studios.
Our biggest problem (apart from not having access to even hiring basic gear) is finding actors who can... well, act.
Short term, since we can't hire professionals, we're running teaching seminars for young people and using the best hopefuls to produce (hopefully!) reasonable work.
The entire studio runs on FOSS software partly because it's convenient, but also because it's practical for small studios. We will use commercial stuff IF we have to but right now I've managed to avoid that completely. This all started when our Macs got old and started dying. Here's what we're using.
GNU/Linux base: Antergos & Debian
Natron: Color correction, green screen, etc.
Kdenlive: Video Editing and basic composition work.
Audacity: Audio editing, audio effects.
Blender: 3D models, motion tracking
Libre Office: Screenwriting
GIMP and Krita: Static images, textures, matte paintings.
Inkscape: Credit roll
Probably many others, but these are the main ones. Now I won't pretend that things are much easier with some commercial software (After Effects for example, or even Hitfilm on Windows and Mac).
However, if we can get into a festival with one or more of these we can show other producers that this is not just possible but a really practical way to make films and save money that can be used to pay your cast and crew. Hell, even if it's just getting the unpaid cast their lunch. It all adds up.