Bulbflow is great, but a little lower-level and doesn't offer much Django-specific integration (eg auth, admin, signals). It expects you to learn more about Neo4j, for better or worse.

bulbflow avoids vendor lock-in via rexster.

Good point. One of these days, I'd love to decouple the DSL in neo4django from the query building, and allow eg a Rexter backend.

this is integration with Django, not only an abstraction layer. Also it use Cypher querying language instead of Gremlin.

We use Gremlin for some of the more complicated stuff as well.