For a small NGO website, featuring lots of photo galleries and PDF documents, I am looking for CMS suggestions for a really simple flat file PHP CMS that, out of the box, will read a directory structure and show it, including multiple-folder hierarchy, static pages (TXT or HTML), image galleries (for folders with images) and document downloads (for folders with documents). If possible, uploading and folder creation would be an advantage.
I've been trying Kirby, Grav and other similar CMSes, but I still haven't found a solution without heavily customizing the systems... Is there a CMS that will do this without customization?
My idea is something like a "light" version of Plone.