So, I built a thing... actually a couple of things.
Restagraph is an engine that puts an HTTP API in front of Neo4j, and enforces a user-defined schema on the incoming data. The schema is stored in the database and loaded by the appserver on startup, there's an API for uploading a schema, and the whole thing's designed to be deployed via Docker.
Why release this now that there's a GraphQL equivalent? Because GraphQL carries legacy relational thinking, and this one thinks in property-graphs. The key difference, which prevented me abandoning this work, is that GraphQL only allows one type of target resource for a given relationship. In Restagraph, you can define a LOCATION relationship to a city, a building or a conference room in a hotel.
It's currently at alpha-level maturity: most of the functionality is there and working, but I have a lot of work to do around hardening it and expanding the test suites, and then fixing the bugs that the expanded test-suites reveal.
The name came from me aiming to put a REST interface on a graph database. The API is now somewhere between that and GraphQL, so the name is just as apt but for different reasons. It's also a dorky name, but naming things just isn't one of my strong points.
I said "a couple of things." Syscat is the original project; Restagraph just naturally emerged as an engine with its own separate existence, and now Syscat's just Restagraph plus a custom schema. It's yet another IT environment database, but this one captures everything- from spare parts to org-charts. It's also designed explicitly to be multi-organisation, so you can track this virtual circuit through those ISPs to that data centre (which is operated within Company X's infrastructure) with whatever level of detail you have on hand.
I'm a former sysadmin and network engineer, and Syscat benefits from many lessons learned from the various products I've used over the years. One of those lessons was to separate what is from what should be, and another is to make sure user extensions to the schema and API are first-class, not gaffer-taped onto the side.
Its documentation is way behind at the moment. It has a big and complicated schema, which requires a gentle introduction. However, it seemed foolish to introduce Restagraph without mentioning its raison d'etre.
If anybody's interested in taking either of them for a spin, you can find Docker images for Restagraph as well as images for Syscat. I'd be delighted to get constructive feedback about either project, whether here or via issues on Github.