draw.io - Online diagramming application
Qrvey - Embedded Analytics built exclusively for SaaS applications.
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.
DevicePilot - DevicePilot is a universal cloud-based software service allowing you to easily locate, monitor and manage your connected devices at scale.
PlantUML - PlantUML is an open-source tool that uses simple textual descriptions to draw UML diagrams.
Syndigo - Syndigo is an online management platform that provides access to the world’s biggest global content database of digital information.