draw.io - Online diagramming application
Readymag - Readymag is a design toolkit that helps create immersive digital experiences without developers in days, not weeks.
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.
Publitas.com - Publitas helps you to drive more visitors to your online store by publishing catalogs online.
PlantUML - PlantUML is an open-source tool that uses simple textual descriptions to draw UML diagrams.
FlippingBook - FlippingBook changes the way you present your documents