Fondoodler - Hot glue gun for cheese, by BuzzFeed 🧀
draw.io - Online diagramming application
Wispberry - Review your everyday
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.
Reviews for iOS - Keep track of your App Store reviews
PlantUML - PlantUML is an open-source tool that uses simple textual descriptions to draw UML diagrams.