I am searching for a software with which I am able to organize my files.
For example there are some media players (e.g. Amarok) that provide what I am looking for songs: ratings, tags, etc. However, I search for a software for arbitrary files, in particular scientific papers and books (but not solely) for references.
There exist reference manager software, but I'm not aware that they manage the PDFs themselves. Also, managing PDFs is only part of it - I also want to mange other files (e.g. videos, images, whatnot). Most importantly is tagging to me.
I am running Kubuntu (soon to be 16.04).
PS: Not sure if https://www.alfresco.com/products/community/download (https://wiki.alfresco.com/wiki/Installing_Alfresco_Lab_3_Stable_on_Ubuntu_8.10 - but nothing for new Ubuntus) and http://www.nuxeo.com/downloads/ which I got from A software to index PDF files and manage collections is what I am searching for …