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.
vym - VYM (View Your Mind) is a tool to generate and manipulate maps which show your thoughts.
PicMonkey - PicMonkey is a feature-rich online photo editor that works right in your browser; no downloads...
Linked Ideas - A macOS/iOS apps to treat ideas as links of concepts.
Piktochart - Piktochart for Business Storytelling
Freeplane - Freeplane is a powerful and free software for building mind maps.