Photostage - Quickly and easily combine photos and videos with a narration or soundtrack using PhotoStage slideshow software. Free slideshow maker download for Mac & PC.
draw.io - Online diagramming application
ProShow - ProShow is a dedicated tool for creating slide shows from your photos, video and music.
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.
SmartSHOW 3D - SmartSHOW 3D is pro-level slideshow software with a powerful 3D animation engine.
PlantUML - PlantUML is an open-source tool that uses simple textual descriptions to draw UML diagrams.