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Statistics:
  CCOUNT: (cf. SPSS Cross-Tabs) (Linux, Win)
  CRAN: See Also R (Linux, Mac, Win)
  Dap: SAS Clone (Linux, Unix)
  Draco: Statistics Package (Linux, Mac, Win)
  EasyDIAG: Interrater Agreement (MatLab)
  ELKI: Data mining (Linux, Mac, Win)
  ESCI: Confidence Intervals (Excel)
  ESS: Emacs Speaks Stats (Linux, Mac, Win)
  ExGutils: Ex-Gaussian (Linux, Mac, Win)
  GlabStat: Web Stats App
  GLSD: Comparisons (Linux, Mac, Win)
  Gnumeric Spreadsheet (Linux, Win)
  Gretl: Econometrics (Linux, Mac, Win)
  |STAT Statistical Data Analyusis (Unix, DOS)
  jamovi: Stats (Linux, Mac, Win)
  JASP-Stats (Linux, Mac, Win)
  jHepWork: Data-Analysis (Linux, Mac, Win)
  MacAnova (Linux, Mac, Win)
  Mac Apps (Mac)
  MicrOsiris: Data Management (Win)
  MixWILD: Mixed Models (Mac, Win)
  MorePower60 ANOVA (Win)
  OpenModeller: Modelling (Linux, Win)
  OpenMx: Structural Equations (Linux, Mac, Win)
  Orange: Visualized Data (Linux, Mac, Win)
  PAST: Palaeontological (Win)
  PSPP (cf. SPSS) Stats (Linux, Mac, Win)
  Root: Object-Oriented Data Analysis (Linux)
  ShinnyApps: Experience Stats
  SISA: Internet Stats
  Statist (Linux, DOS)
  Stats Parametric Mapping: fMRI, EEG (Linux, Mac, Win)
  StatistX (Linux, Win ) 
  Tetrad Causal Models (Linux, Mac, Win)
  Weka: Data Mining (Linux, Mac, Win)
Meta-Analysis:
  Meta-Analysis Stuff
  Ralf Schwarzer Meta-Analysis (DOS)
Power:
  G*Power (Tutorial): OS 9X (Mac, Win)
  PowerUpR Power Analysis
  Statistical Power Page  (Linux, Mac, Win)
R Graphical Interfaces:
  R: see CRAN (Linux, Mac, Win)
    BlueSky Stats (Win)
    Deducer: Intuitive Stats (Linux, Mac, Win)
    JGR: Java GUI (Linux, Mac, Win)
    Rattle: Data Mining (Linux, Mac, Win)
    RCommander: Easy R (Linux, Mac, Win)
    RKward:Stats (Linux, Mac, Win) 
    RStudio: IDE for R (Linux, Mac, Win)
Graphics:
  Dstat: Stats Tool (Linux)
  Gnuplot: Plot, Chart (Linux, Mac, Win)
  Gplot (Linux, Mac, Win)
  Graphviz: Graphs  (Linux, Mac)
  Gri: Programming (Linux, Win)
  LabPlot: Anaysis & Visualisation (Linux, Mac)
  ImLib3D: 3D Image Processing (Linux)
  MayaVi: Data Visualizer (Linux, Win)
  Maxima: A computer Algebra System (Linux, Win)
  Octave Cf. Matlab (Linux, Mac, Win)
  Open Dynamics Engine: Simulating Dynamics (Win)
  PLplot: PLotting Software (Linux, Mac, Win)
  RLplot  Graph Generator (Linux, Win)
  Scilab: Computation & Graphics (Linux)
  SciGraphica: Scientific Graphics (Linux, Win)
  Shyni App: Collinearity Effect