Cvent - Cvent's event management software provides event planners with a complete solution to increase event attendance and decrease event costs.
draw.io - Online diagramming application
Bizzabo - Bizzabo is the world’s fastest growing event tech company. Our holistic Events Cloud empowers marketers and planners to manage, grow and maximize events.
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.
Eventbrite - Discover Great Events or Create Your Own & Sell Tickets
PlantUML - PlantUML is an open-source tool that uses simple textual descriptions to draw UML diagrams.