Pigment by ShapeFactory - A unique way to explore color using lighting and pigment
draw.io - Online diagramming application
ibis Paint X - Drawn with + ibisPaint
LucidChart - LucidChart is the missing link in online productivity suites. LucidChart allows users to create, collaborate on, and publish attractive flowcharts and other diagrams from a web browser.
Kdan Mobile Animation Desk - Achieve your dream of creating your own animation.
PlantUML - PlantUML is an open-source tool that uses simple textual descriptions to draw UML diagrams.