YouiDraw - Draw and Design Vector Graphics, Logo, Text, icon in the Cloud.
draw.io - Online diagramming application
Aphalina Designer - Download this app from Microsoft Store for Windows 10, Windows 10 Team (Surface Hub). See screenshots, read the latest customer reviews, and compare ratings for Aphalina Designer.
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.
formo.one - Create generative art from any kind of photo
PlantUML - PlantUML is an open-source tool that uses simple textual descriptions to draw UML diagrams.