Developer Tools
Statistical Analysis
FREEA comprehensive, browser-based statistical analysis suite with 86+ tools across 12 categories. Powered by WebAssembly for lightning-fast computation on datasets with 1M+ rows. Your data never leaves your device.
Descriptive statistics with interactive histogram and data worksheet
86+ Tools Across 12 Categories
From basic descriptive statistics to advanced machine learning -- everything you need for professional data analysis in a single browser tab.
Basic Statistics
7 toolsDescriptive stats, correlation matrices, cross-tabulation, outlier detection
Hypothesis Testing
11 toolsT-tests, Z-tests, proportion tests, power & sample size, equivalence (TOST)
Regression & Modeling
11 toolsOLS, logistic, Poisson, nonlinear, PLS, Deming, ICH stability
ANOVA
10 toolsOne-way, two-way, GLM, Welch, nested, ANCOVA, repeated measures, mixed effects
Quality Tools
32 tools19+ control charts, 6 capability analyses, 7 MSA types (Gage R&R, linearity)
Time Series
8 toolsACF/PACF, ARIMA, exponential smoothing, decomposition, trend analysis
DOE
7 toolsFull & fractional factorial, Plackett-Burman, CCD, Box-Behnken, RSM
Predictive / ML
6 toolsDecision trees, random forests, gradient boosting, KNN, SVM, neural nets
Multivariate
8 toolsPCA, factor analysis, clustering, discriminant analysis, MANOVA
Nonparametric
9 toolsMann-Whitney, Kruskal-Wallis, Wilcoxon, Friedman, Theil-Sen estimator
Data Operations
7 toolsStack, unstack, subset, transpose, merge, recode, formula columns
Graphics
15 toolsScatter, bar, pie, Pareto, 3D surface, control charts, ROC curves
See It in Action
Publication-ready charts, interactive results, and a spreadsheet-style worksheet that handles massive datasets with ease.
Descriptive Statistics
Full statistical summary with interactive histogram
Graphical Summary
Histogram, boxplot, confidence intervals, and normality testing
Time Series ACF
Autocorrelation analysis with lag table and significance bands
Why Engineers Love It
Built for speed, privacy, and professional output.
WebAssembly Powered
Lightning-fast computation off the main thread. Handle 1M+ row datasets without breaking a sweat.
Zero Installation
Open your browser and start analyzing. No downloads, no plugins, no environment setup.
100% Private
Your data never leaves your device. All computation happens locally in your browser.
Export Anywhere
Generate publication-ready PDF reports, editable Word docs, or save sessions as JSON.
41 Sample Datasets
Jump right in with built-in datasets across 12 categories. Learn by doing.
6 Themes
Default, Ocean, Forest, Slate, Rose, and Amber color schemes for your spreadsheet.
Import Your Data
- CSV, TSV, TXTAuto-detects delimiters
- Excel (.xlsx, .xls)Direct import
- Clipboard PasteFrom Excel / Google Sheets
- Sample Library41 datasets across 12 categories
Export Results
- PDF ReportsPublication-ready formatting
- Word (DOCX)Editable documents
- Session JSONSave & restore full analysis
- ClipboardCopy results directly
Start Analyzing Data Now
No download, no account, no cost. Open your browser and run professional-grade statistical analysis in seconds.