NoSQL Implementations
    Companies Using NoSQL
    
      - Facebook:  Inbox Search (50 TB), Hadoop (30 PB!!!)
- Google:  BigTable (too big to measure)
- Yahoo!:  Yahoo! Search Webmap (gigundo-huge)
- Twitter:  Cassandra, Hbase, FlockDB, Hadoop
- New York Times:  NYT R&D Lab on MongoDB
- Digg:  Green Badges (3 TB)
- Sourceforge:  MongoDB used throughout
- Amazon
- Last.fm
NoSQL Products
    
      - Apache:  Cassandra, CouchDB, Hadoop, Hbase, River . . . .
- Berkeley DB
- BigTable
- eXist
- FlockDB
- Freebase
- memcached
- MongoDB
- Terrastore
Next:  MongoDB