The Creative Marketer - Techniques & tools for copywriters, marketers, and creatives
Inkscape - Inkscape is a free, open source professional vector graphics editor for Windows, Mac OS X and Linux.
Marketing Examples - A gallery of real world marketing case studies. Updated every day.
Sketch - Professional digital design for Mac.
Growth.Design Case Studies - Product tips… in a comic book format
Affinity Designer - Professional creative software, exclusively for Mac.