Actively using ArangoDB. It has good performance and features. The only thing lacking is something akin to “views” but you can always denormalize into another collection albeit managed by the application. Graphs are a very natural way of thinking about entities and relationships and in its simplicity my development sped up. I personally like to try and schema out in MySQL Workbench etc. but if you want to get started doing something you can basically just make a mind-map and that’s effectively your schema, very intuitive and quick. Great for proof of concept.

Oh and the ability to query for shortest path and similar graph computations, and the DB does all the heavy lifting, is super nice.