Docker - Docker is an open platform that enables developers and system administrators to create distributed applications.
draw.io - Online diagramming application
Kubernetes - Kubernetes is an open source orchestration system for Docker containers
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.
Amazon ECS - Amazon EC2 Container Service is a highly scalable, high-performance container management service that supports Docker containers.
PlantUML - PlantUML is an open-source tool that uses simple textual descriptions to draw UML diagrams.