spb/tools-spboucher-ai

1{2  "slug": "gretl",3  "name": "gretl",4  "aliases": ["Gnu Regression, Econometrics and Time-series Library"],5  "vendor": { "name": "gretl developers (Allin Cottrell, Riccardo Lucchetti)", "slug": "gretl", "website": "https://gretl.sourceforge.net" },6  "homepage_url": "https://gretl.sourceforge.net/",7  "docs_url": "https://gretl.sourceforge.net/",8  "product_type": "application",9  "product_status": "active",10  "summary": "Free, GPL-licensed cross-platform econometrics program with a GUI, the hansl scripting language and estimators for time series, panels and limited dependent variables",11  "description": "gretl (Gnu Regression, Econometrics and Time-series Library) is a free, open-source econometrics package written in C and released under the GNU GPL version 3. It offers a multilingual graphical interface, a command-line program and a script editor for hansl, its built-in language with matrix operations and user-written function packages. Estimators span least squares, maximum likelihood, GMM and regularized regression (LASSO, ridge); time-series tools include ARIMA, GARCH-type models, VARs and VECMs, unit-root and cointegration tests and the Kalman filter; limited dependent variable models (logit, probit, tobit, count, duration) and panel estimators including dynamic panel GMM are provided.\n\ngretl exports models to LaTeX, plots with gnuplot and exchanges data with R, Octave, Python, Julia, Ox and Stata. Installers exist for Windows and macOS, with Linux packages in Debian and Fedora. Releases are frequent (2026d dated October 2026). It is popular in teaching and among researchers who want a free Stata- or EViews-like environment, though its ecosystem of contributed packages is smaller than R's.",12  "capabilities": ["GUI plus command-line and hansl scripting", "OLS, ML, GMM and regularized estimators", "ARIMA, GARCH, VAR/VECM, cointegration and Kalman filter", "Panel estimators including dynamic panel GMM", "Logit, probit, tobit, count and duration models", "LaTeX model export and gnuplot graphics", "Data exchange with R, Octave, Python, Julia, Stata"],13  "workflows": ["Introductory econometrics course with a free GUI tool", "Quick time-series diagnostics before scripting in R"],14  "advantages": ["Free and open source under GPL-3.0", "Cross-platform with native installers", "Scriptable and GUI-driven at once"],15  "limitations": ["Smaller package ecosystem than R or Python", "SourceForge hosting blocks some automated clients", "Fewer modern causal-inference methods than specialized packages"],16  "prerequisites": ["Windows, macOS or Linux"],17  "audiences": ["Econometrics instructors and students", "Researchers wanting a free GUI econometrics package"],18  "alternatives": ["stata", "eviews", "r", "statsmodels"],19  "comparison_notes": "gretl is the free counterpart to Stata and EViews with a similar point-and-click plus script model; R and statsmodels offer far larger ecosystems but no comparable GUI.",20  "categories": [{ "slug": "econometrics-causal-inference", "primary": true }, { "slug": "math-stats-tools" }],21  "tags": ["econometrics", "time-series", "open-source", "macos"],22  "use_cases": ["estimate-causal-effects"],23  "operating_systems": ["windows", "macos", "linux"],24  "execution_modes": ["local"],25  "interfaces": ["desktop", "cli"],26  "deployment_models": ["desktop"],27  "integrations": ["R", "GNU Octave", "Python", "Julia", "Stata", "gnuplot", "LaTeX"],28  "data_formats": ["gretl data (.gdt)", "CSV", "Excel", "Stata .dta", "EViews", "SPSS"],29  "languages": ["hansl", "C"],30  "source_model": "open-source",31  "license_spdx": "GPL-3.0-only",32  "pricing_model": ["free", "open-source"],33  "self_hostable": true,34  "sources": [35    { "url": "https://gretl.sourceforge.net/", "type": "official_site", "title": "gretl", "supports": ["name", "summary", "capabilities", "license_spdx", "operating_systems"], "checked_at": "2026-11-02", "note": "Homepage states GPL v3 licensing and lists features and current release" },36    { "url": "https://sourceforge.net/projects/gretl/", "type": "repository", "title": "gretl on SourceForge", "supports": ["repo_url", "source_model"], "checked_at": "2026-11-02" }37  ],38  "confidence": "medium",39  "uncertainty_note": "SourceForge pages return 403 to command-line clients; content was verified through a rendering fetcher. license_spdx is taken from the homepage statement rather than a separate LICENSE file.",40  "discovery_method": "editorial-research",41  "depth": "standard",42  "editorial_status": "reviewed",43  "visibility": "public",44  "featured": false,45  "author": "batch-E"46}47