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.

PayJunction - PayJunction powers mid- to large-scale businesses with smart payment processing, electronic signature capturing, and comprehensive multi-user multi-location reporting.

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.

Merchant Warrior - Merchant Warrior is an end-to-end payments gateway that provides merchant services via an online payment gateway, ISO management, and payment solution providing platform.

Paperless-NG - A supercharged version of paperless: scan, index and archive all your physical documents - jonaswinkler/paperless-ng

Vapulus - Vapulus is an ultimate Payment solution for businesses that meet their specific needs.