I created a new ElasticSearch plugin for Neo4j, you can find it here : https://gitlab.com/ouestware/neo4j-elasticsearch
In fact it's an evolution of the project https://github.com/neo4j-contrib/neo4j-elasticsearch, with some additions :
- ES auth (if needed)
- Compatible with Neo4j complex types (ie. dates, time, point, ...)
- Cypher procedure to index your database (useful after the load of a dump)
- Tested on the latest versions of ES
The plugin is available for the version 3.5 and 4.0 of Neo4j.
Give it a try, I would love to have your feedbacks !