KEEL!

RapidMiner (Community edition) is a data mining software.It was formerly known as "YALE".

Knime is a java open-source, cross-platform application which name means "Konstanz Information Miner". It is actually used extensively for data mining, data analysis and optimization. It can be downloaded as the core application itself(Knime Desktop), or the whole SDK which is based on Eclipse Helios.

Weka is a collection of machine learning algorithms for data mining tasks; with its own GUI.

Apache Mahout is an Apache project to produce free implementations of distributed or otherwise scalable machine learning algorithms on the Hadoop platform. Mahout is a work in progress; the number of implemented algorithms has grown quickly, but there are still various algorithms missing.While Mahout's core algorithms for clustering, classification and batch based collaborative filtering are implemented on top of Apache Hadoop using the map/reduce paradigm, it does not restrict contributions to Hadoop based implementations. Contributions that run on a single node or on a non-Hadoop cluster are also welcomed. For example, the 'Taste' collaborative-filtering recommender component of Mahout was originally a separate project, and can run stand-alone without Hadoop. Integration with initiatives such as the Pregel-like Giraph are actively under discussion.External links EC2 AMI with Hadoop and Mahout Giraph - a Graph processing infrastructure that runs on Hadoop (see Pregel). Pregel - Google's internal graph processing platform, released details in ACM paper. »

ELKI: "Environment for Developing KDD-Applications Supported by Index-Structures" is a development framework for data mining algorithms written in Java. It includes a large variety of popular data mining algorithms, distance functions and index structures.

Powerful forecasting software for small businesses, traders and scientists. GMDH Shell is the easiest way to accurately forecast time series, create classifiers and regression models. Based on artificial neural networks, it allows you easily create predictive models, as well as preprocess data with dead simple point-and-click interface. Unlike other tools based on neural networks - GMDH Shell is very fast because of state-of-the-art parallel processing and great optimization of core algorithms.

Neural Designer is a software tool for advanced analytics, and includes tools for descriptive, diagnostic, predictive and prescriptive analytics. The objective is to get actionable insights resulting in smarter decisions and better business outcomes.

Actian transforms Big Data into business value for any organization?not just those with considerable resources. Actian provides transformational business value by delivering actionable insights into new sources of revenue, business opportunities, and ways of mitigating risk with high-performance in-database analytics complemented with extensive connectivity and data preparation. Actian Analytics Platform delivers extreme performance with off-the-shelf hardware, overcoming key technical and economic barriers to broad adoption of Big Data. Actian also makes Hadoop enterprise-grade by providing high-performance ELT, visual design, and SQL analytics on Hadoop without the need for MapReduce skills. Among tens of thousands of organizations benefiting from Actian are innovators using analytics for competitive advantage in industries such as financial services, telecommunications, digital media, healthcare, and retail. The company is headquartered in Silicon Valley and has offices worldwide. »