Sales & Marketing Stack Wiki - Curated articles about modern sales & marketing technology
Artboard Studio - Online graphic design app mainly focused on product mockups.
Tiny Marketing Wins - Get a (small) marketing tip every day
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.
Content Marketing Stack - A curated directory of content marketing resources
Snappa - The perfect graphic design tool for digital marketers.