MadCap Flare - Documentation for Any Audience, Language or Format
Inkscape - Inkscape is a free, open source professional vector graphics editor for Windows, Mac OS X and Linux.
Yumpu.com - The UK’s favourite all-inclusive online magazine package
Sketch - Professional digital design for Mac.
Readymag - Readymag is a design toolkit that helps create immersive digital experiences without developers in days, not weeks.
Affinity Designer - Professional creative software, exclusively for Mac.