draw.io - Online diagramming application
DeltaSalesApp - Field Sales Force Automation & Field Force Tracking Software
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.
ReachOut - ReachOut is a field service management suite to streamline field processes with customizable mobile-based forms and workflow.
PlantUML - PlantUML is an open-source tool that uses simple textual descriptions to draw UML diagrams.
Service Cloud Field Service - Service Cloud Field Service is a cloud-based field service solution designed to initiate customer service activities from anywhere.