Readymag - Readymag is a design toolkit that helps create immersive digital experiences without developers in days, not weeks.
Affinity Publisher - Professional desktop publishing app
MadCap Flare - Documentation for Any Audience, Language or Format
Scribus - Scribus is a desktop publishing (DTP) application.
Publitas.com - Publitas helps you to drive more visitors to your online store by publishing catalogs online.
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.