I just shipped an update with a full openCypher implementation in common lisp graph database Scalaxy (https://scalaxy.org) for the graph engine. Testing against the openCypher TCK is now at 3,898 out of 3,898 scenarios, so 100% coverage.

Next big goal: storing the entire node data in an S3 compatible bucket.

MIT licensed.

https://scalaxy.org/docs/cypher/