问题
Greetings,
Is there any open source graph database available other than Neo4J??
NOTE: Why not Neo4J?
Neo4J is opensource, but counts primitives (number of nodes,relationships & properties). If you are using it for commercial use. And does not have any straight forward information of pricing on official website. so there can be potential vendor lock-in (Although I have just started my company, and don't have budget to spent money on software anyway.) so It is out of option.
Regards,
回答1:
As RobV said, if your graphs can be represented in just about any custom format such as RDF or DOT language, you're in luck! Here's various options you have:
- RDF: Jena - Considered to be the de facto implementation of RDF for Java, however it has it's oddities such as heavy usage of Iterators.
- RDF: Protégé - If you don't use Jena (and even if you would) but would like to use RDF, Protégé is the tool for you. It's basically a really well done ontology editor which makes handling the graph data a breeze. It also uses a plugin hierarchy similar to Eclipse and there's loads of plugins available so you can plugin stuff like OWL ontologies easily.
- DOT: GraphViz - Another very popular tool, GraphViz can generate graphs from DOT language. Very powerful, a bit tricky to learn but also potentially all you need.
Of course if it fits your company's profile, you could develop your own and start selling it as a product.
回答2:
OrientDB (old link) appears to support graph storage in much the same was as Neo4j
回答3:
Wikipedia lists some other alternatives: http://en.wikipedia.org/wiki/Graph_database
回答4:
I suggest you to use Blueprints from tinkerpop, they allow you to use a graphDB of your choice (also from Neo4j and OrientDB). And they also provide an extension to use the db as rdf repository (using Sesame Sail).
回答5:
Well, Neo4j is Open Source under the GPLv3 for the Community Edition and AGPL for the Advanced and Enterprise editions.
For more info, please look at http://neo4j.org/licensing-guide/
/peter neubauer, part of the Neo4j team.
回答6:
If your Graphs could be represented as RDF graphs then you could use Jena since that is entirely free and open source
http://jena.sourceforge.net
Whether that's in any way useful to you depends on why you need a Graph database and what type of Graphs you need to store in it.
回答7:
Also take a look at ArrangoDB. A lovely multi-model database.
https://www.arangodb.com/
EDIT : Must say that I'm falling more and more in love with Arrango :)
回答8:
I know, it's been a while, but, today, I was asking myself the same question, and I found OhmDB Seems to be for lightweight purposes.
来源：https://stackoverflow.com/questions/1754628/graph-database-in-java-other-than-neo4j