So from time to time I’d need some quick diagrams to understand relationships between different processes/servers in a solution. I initially found few plugins in DocuWiki which would allow to type out these diagrams.

Example:

digraph {
A [label="King Arthur"]
B [label="Sir Bedevere the Wise"]
L [label="Sir Lancelot the Brave"]
A -> B
A -> L
B -> L [constraint=false]
}

Reference: Graphviz Readthedocs

Recently I have found resources which would allow you to type out on a web page and generate the diagram in real-time.

Online Resources: