Medidata CTMS - Medidata CTMS seamlessly integrates with Medidata Rave to provide real-time views into study progress without manual tracking.
draw.io - Online diagramming application
OpenClinica - OpenClinica is an open source clinical trials 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.
OnCore - OnCore Enterprise Research system supports efficient processes at academic medical centers, cancer centers, and health care systems.
PlantUML - PlantUML is an open-source tool that uses simple textual descriptions to draw UML diagrams.