OrientDB from Orient Technologies (in London, UK :-) is a distributed transactional graph database.
I saw it via this post on Hacker News:
OrientDB, the most versatile database I’ve run across
The article linked in that post is here:
An interesting point in that article is that the author, Petter Graff, thinks that OrientDB is versatile, and somewhat unusual in that it seems to be good for graph, document and object-oriented database applications - which may not be common in a single database product.
They have both a free Community edition and an Enterprise edition, with professional services. OrientDB customers includes Lufthansa, Pitney Bowes and Cisco, according to their site.
I'm checking out OrientDB (with the Python binding) and will blog again later if I find it interesting.
- Vasudev Ram - Python, Linux and open source consulting