1-Software-R (another popular GNU open-source data mining tool. It already has a number of pre-defined modules and functions. Users need to write scripts for their operations)

2-Rapid miner (Rapid Miner is one of the most popular data-mining tool available free. It is an open source data mining software. The best thing is that users do not need to write code)

3-SAS DATA MINING (Discover data set patterns using SAS data mining commercial software. Its descriptive and predictive modelling provides insights for better understanding of the data)

 

4-WEKA (WEKA is a very sophisticated data mining tool. It shows you various relationships between the data sets, clusters, predictive modelling, visualization etc. There are a number of classifiers you can apply to get more insight into the data)

5-ORANGE DATA MINING SOFTWARE (Orange is an open source data mining)

6-KNIME (Has all the required tools for data extraction)

7-NLTK (Natural language tool kit, is best for language processing task)

8-JHepWork (This software is suitable for scientists, students and researchers)
9-PENTAHO (with this tool you can easily blend data from any source)

10-Tangara (software used for academic research purposes)