Name: Apache Hbase
Website: hbase.apache.org/
Description:

A data store that’s designed after Google’s BigTable: A Distributed Storage System for Structured Data, Apache HBase is a data hosting company which offers random and “real-time read or write access” to your Big Data.

This open-source, distributed, versioned as well as column-oriented data store offers easy to use JAVA API access, strictly consistent read and writes, Block Cache and Bloom Filters for real-time queries, extensible JRuby-Based (JIRB) Shell, linear and modular scalability, automatic and configurable sharding of tables, automatic failover support between RegionServers, and support for exporting metrics via the Hadoop metrics subsystems to files or Ganglia among others.