A family of Microsoft relational database management systems designed for ease of use.
What you are referring to is a Document Management system. There are many that are not cloud based, but LAN based, There are some that are even for personal use.
Are your needs on a LAN or personal? Do you want to use a database to facilitate searching for the documents? A bi more background on your needs can help us suggest a solution. (not that I disagree with your other responses)