Solid and Inexpensive Alternative to Subscription Software

I'm a healthcare provider working in a private practice setting in which I am the sole owner. My focus most days is on the clinical nature of my day-to-day job, and while recordkeeping and knowledge-sharing are important in the heavily regulated industry I work in, I could not justify spending more on the document management software I use for administrative duties than I do on the specialized clinical software that allows me to monitor and provide for the patients in my care. I also need to be able to access and manage my files far into the future, so a subscription model just did not feel appropriate for me.

The user interface can be overwhelming and is somewhat dry.