Saleo.io - SaaS sales are hard enough - don’t let generic demos & bad data interfere with winning deals. Create personalized sales demos at scale for your entire team with complete control over graphs, text, images, and icons.
draw.io - Online diagramming application
Spot.xyz - Your team, together. Create a free virtual HQ in a few seconds.
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.
Plectica - Easily diagram anything, together
PlantUML - PlantUML is an open-source tool that uses simple textual descriptions to draw UML diagrams.