NoSQL is a trend which has evolved into a loosely organized movement based on the fact that SQL (designed in the 1960s-1970s)
- Amazon's Dynamo: http://www.allthingsdistributed.com/2007/10/amazons_dynamo.html
Amazon Simple Storage Service (Amazon S3).
- Amazon S3: http://aws.amazon.com/s3/
A highly scalable, eventually consistent, distributed, structured key-value store
- Cassandra: http://cassandra.apache.org/
- Persevere: http://www.persvr.org/
Neo4j is a graph database.
- Neo4j: http://neo4j.org/
- CouchDB: http://couchdb.apache.org/
MongoDB bridges the gap between key-value stores (which are fast and highly scalable) and traditional RDBMS systems (which provide rich queries and deep functionality).
- MongoDB: http://www.mongodb.org/
- - Episode 0.1.8 - NoSQL Smackdown!: http://thechangelog.com/post/457259567/episode-0-1-8-nosql-smackdown