Affinity Publisher - Professional desktop publishing app
Teedy - Teedy is a lightweight document management system packed with all the features you can expect from big expensive solutions but still easy to use.
SmartPublisher - Newspaper Software: CRM software, magazine software, subscription software, newspaper sales management, classified ads software,newspaper invoice software, newspaper accounting
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.
Xpublisher - Xpublisher is a content publishing software that helps you to structure your content and then allows you to easily publish the content on various platforms.
Paperless-ngx - paperless-ngx has 6 repositories available. Follow their code on GitHub.