How to generate dependency graph with text [closed]

Question

Is there a simple online tool that will generate a dependency graph (boxes linked by arrow lines) based on text input like:

A -> B

Much like this one:

www.websequencediagrams.com

(It generates a sequence diagram)

Answer 1

graphviz is a tool for generating graphs.

webgraphviz.com is a web app that uses graphviz, and lets you modify the text and display the corresponding graph (it has 5 samples/examples as well).

graphviz takes input like this:

digraph G {    A->B } 

Answer 2

http://www.nomnoml.com

It's using the syntax:

[A] -> [B]