I think it worth to create a Wikipedia page for JanusGraph and then add it into the list of notable graph databases.

Here is a draft page:

https://en.wikipedia.org/wiki/Draft:JanusGraph

Here is a list of notable graph databases:

https://en.wikipedia.org/wiki/Graph_database#List_of_graph_databases

You can see that I've included a JanusGraph logo image into the page. I don't know who is the author of that logo. If you know, please correct this information here (right now the author is JanusGraph):

https://en.wikipedia.org/wiki/File:JanusGraph_Logo.png

If you see any mistakes or would like to improve / add some information it would be great. 

Please, follow Wikipedia policy when editing the article so that the article review would not be rejected.

Best regards

Alexandr Porunov