Evernote - Bring your life's work together in one digital workspace. Evernote is the place to collect inspirational ideas, write meaningful words, and move your important projects forward.
Papermerge DMS - Open source document management system designed for archiving and retrieving your digital documents. Instead of having piles of paper documents all over your desk, office or drawers - you can quickly scan and upload them to Papermerge DMS.
allTags - allTags is a free, tag based file management application.
Paperless - Developers and publishers of Mac, Win, and iOS productivity, home and office and writing software such as MacGourmet, Paperless, MacJournal and many more. Based in MN.
Tabbles - Tabbles use tags to organize and find files along with your colleagues.
Paperless-NG - A supercharged version of paperless: scan, index and archive all your physical documents - jonaswinkler/paperless-ng