Master: 
ArangoDB is a universal open-source database with flexible data model for documents, graphs, and key-values. Build high performance application using a convenient sql-like query language or JavaScript/Ruby extensions.
Key features include:
- Schema-free schemata let you combine the space efficiency of MySQL with the performance power of NoSQL
- Use ArangoDB as an application server and fuse your application and database together for maximal throughput
- JavaScript for all: no language zoo, you can use one language from your browser to your back-end
- ArangoDB is multi-threaded - exploit the power of all your cores
- Flexible data modeling: model your data as combination of key-value pairs, documents or graphs - perfect for social relations
- Free index choice: use the correct index for your problem, be it a skip list or a n-gram search
- Configurable durability: let the application decide if it needs more durability or more performance
- No-nonsense storage: ArangoDB uses all of the power of modern storage hardware, like SSD and large caches
- Powerful query language (AQL) to retrieve data
- It is open source (Apache Licence 2.0)
For more in-depth information
- read more on the design goals of ArangoDB
- watch the video - Martin Schoenert, architect of ArangoDB, gives an introduction of what the ArangoDB project is about.
- or give it a try.
For Mac OSX execute
brew install arangodb
For Linux use the distribution dependend package manager, see Installation Manual for details.
For Windows users: we are working hard on a Windows version. A first version will become available soon.
If the package manager has not already started the ArangoDB server, use
unix> /path/to/sbin/arangod
2012-03-30T12:54:19Z [11794] INFO ArangoDB (version 1.x.y) is ready for business
2012-03-30T12:54:19Z [11794] INFO Have Fun!
/path/to/sbin is OS dependent. It will normally by either /usr/sbin or /user/local/sbin. Point your browser to
http://localhost:8529/
and select the tab Shell. You can now use the Arango shell from within your browser. Alternative, it is available as command-line tool arangosh.
arangosh> db._create("hallo");
arangosh> db.hallo.save({ world: "earth" });
Congratulations! You have created your first collection called hallo and your first document. To verify your achievements
arangosh> db.hallo.toArray();
Please check the Installation Manual for installation and compilation instructions.
The User Manual has an introductory chapter showing the basic operations of ArangoDB.
Or you can use the online tutorial to play with ArangoDB without installing it locally.
Please note that there will be bugs and we'd really appreciate it if you report them:
https://github.com/triAGENS/ArangoDB/issues
You can use the Google group for improvements, feature requests, comments
http://www.arangodb.org/connect