The best part is that it's open source, which means you can use any programming language to develop your application using their API/SDK or other third-party tools like PHP etc.
It has good performance as well when compared with others in market. I haven't found anything specific yet but would be happy if they have more features of graph databases such as subgraphs search query support (eccensa only supports whole graphs). We are solving problems related to data analysis by developing applications for our clients.