1)   statistiXL 1.5
statistiXL is a powerful data analysis add-in for MS Excel. Its abilities include: ANOVA, Contingency Tables, Clustering, Correlation, Discriminant and Factor Analysis, GOF, Regression, Nonparametrics, PCA, Uni and Multivariate t-Tests and many more.

 2)   ESBStats - Statistical Analysis Software 2.0.0
Statistical Analysis and Inference Software for Windows with Average, Mode and Variance through to Hypothesis Analysis, Time Series and Linear Regression. Includes Online Help, Tutorials, Graphs, Summaries, Import/Export and much more.