There are various options to visualize graph data from Neo4j :
- D3.js, Sigma.js, Keylines : javascript libraries for graph visualization
- Gephi : open-source solution for graph visualization. It has a plugin
to easily import Neo4j databases
- Linkurious : a solution to search, explore and visualize graph
data from Neo4j
- Neoclipse : a tool to view, edit and explore Neo4j databases
- Neovigator : a tool to visually explore graphs
- Neo4j's webadmin : already installed with Neo4j
Here is a table that sum this up and explain the differences : http://linkurio.us/comparative-study/
I also suggest reading Max de Marzi's blog, he is an expert on visualization and Neo4j : http://maxdemarzi.com/
Good luck exploring your data!
Disclaimer : I'm a co-founder of Linkurious