NVivo
NVivo is qualitative analysis software used to code and organize unstructured textual data, with capability of analyzing audio and video data as well.

R
R is an open source language and environment for quantitative data manipulation, calculation, and graphics.

Statistical Package for the Social Sciences (SPSS)
All Purpose quantitative analysis tool. Does just about everything (descriptive statistics, correlations, chi square, t-test, ANOVA and the like, Cronbach's alpha, factor analysis, regressions, and linear or path models.

Excel
Quantitative Analysis Database functions Data Visualization

Atlas.ti
Good for analyzing qualitative data. Good for all stages from coding through theme development.

MaxQDA
Qualitative Analysis.

Strata
Quantitative Analysis, like SPSS