I don't think the main issue is what tool you use is, but rather where your master copy lives. I was vigilant using txt/docs in a nice structured folder setup

I don't think the main issue is what tool you use is, but rather where your master copy lives. I was vigilant using txt/docs in a nice structured folder setup on a local server, but as I started using Google docs / Evernote / Trello, etc I found that information was no longer searchable in one place - despite copying and synching efforts, this is still the case. So instead of fighting it and wasting a lot of time, I keep the metadata of my personal knowledge base as the 'master'. For work projects - Trello using my work login and Outlook For open source - github is the master knowledge base Docs - currently Google docs, but soon moving to my own site. Local NAS is really only for backup of the above stuff now.