GitBook - Modern Publishing, Simply taking your books from ideas to finished, polished books.
Canva - Canva is a graphic-design platform with a drag-and-drop interface to create print or visual content while providing templates, images, and fonts. Canva makes graphic design more straightforward and accessible regardless of skill level.
MkDocs - Project documentation with Markdown.
Adobe Photoshop - Adobe Photoshop is a webtop application for editing images and photos online.
Docusaurus - Easy to maintain open source documentation websites
Scribus - Scribus is a desktop publishing (DTP) application.