H2O is the open source math and prediction engine for Big Data Science.

See: Description

Packages 
Package Description
hex
The hex package contains math and machine learning algorithms for H2O.
hex.deeplearning  
hex.drf  
hex.gapstat  
hex.gbm
Gradient Boosting Machine.
hex.glm  
hex.gram  
hex.la  
hex.nb  
hex.pca  
hex.rf
Random Forest.
hex.rng
Random number generators.
hex.singlenoderf  
water
The water package contains the implementation of H2O's core.
water.api
API classes that help implement the embedded web browser interface.
water.deploy
Helper classes that create H2O nodes and clusters for testing.
water.exec
Implementation of the interpreter available in the H2O console.
water.fvec
Fluid Vector API implementation.
water.genmodel  
water.license  
water.nbhm
Non-blocking hash map.
water.parser
Data file parser.
water.persist
Classes that read and write from various persisted devices (such as disk) and data sources (such as HDFS).
water.score
Embeddable low latency scoring model.
water.util
Miscellaneous utility classes (for example, for logging).