gretl · packages & addons

The Catalog Drawer
for gretl add-ons.

Every official addon and user-contributed function package gretl ships or lists, indexed and sorted into methodological drawers — from Bayesian averaging to spatial econometrics — so you can find the right estimator, test or utility without scrolling a giant table.

Regenerated 2026-10-17 10:11 UTC from gretldata.cgi + addons.xml · 2 newly-seen packages auto-classified by keyword rules (marked auto below — worth a manual check)

176Contrib. packages
12Official add-ons
16Categories
68Contributors
103Plain .gfn
73.zip + doc

Official Addons

Maintained by the gretl core team and versioned together with gretl itself. Each one is also cross-listed below, in its matching category, in this same color.

12addons
Addon CORE

gig

An assortment of univariate GARCH models

Needs time-series data

C22
Riccardo "Jack" Lucchetti and Stefano Balietti 2026d-git2026-09-17

Bayesian Methods

Priors, model averaging and Bayesian estimation

5entries
No.013 ZIP

BACE

Bayesian Averaging of Classical Estimates (BACE) procedure

Marcin Błażejowski, Jacek Kwiatkowski v3.112024-12-12
No.019 ZIP

BMA

Bayesian Model Averaging for the linear regression models with jointness measures

Marcin Błażejowski, Jacek Kwiatkowski v3.212024-03-07

Unit Roots, Stationarity & Breaks

Testing for stochastic trends, seasonal roots and structural change

12entries
No.088 GFN

Kapetanios

UR test with ( up to ) five structural breaks under the alternative hypothesis of trend stationarity

Andrea E. Sánchez Urbina, Ricardo Ramírez & Daniel Ventosa-Santaulària v2.12022-04-11
No.126 GFN

PPtest

Phillips-Perron unit root test

Riccardo "Jack" Lucchetti v1.02020-07-26
No.148 ZIP

StrucBreak

Autodetection of structural breaks in linear models, Bai-Perron style

Riccardo "Jack" Lucchetti and Sven Schreiber v1.02025-03-26
No.151 GFN

suradf

SUR-based ADF-type test for multiple time series

Allin Cottrell v0.32022-06-09
No.169 GFN

VSG_test

Tests for a drift (and a shift) in a unit-root process

Daniel Ventosa-Santaulària v1.32018-10-25

Cointegration & Long-Run Analysis

Long-run relationships between I(1) variables

6entries
No.061 GFN

FMOLS

Fully Modified Least Squares Estimation for I(1) variables

Stefano Fachin, Riccardo "Jack" Lucchetti and Artur Tarassow v2.22024-02-19
No.086 GFN

johansenrec

Cointegration stability tests (Hansen & Johansen)

Andreas Noack Jensen and Sven Schreiber v1.72024-04-08

Univariate Time-Series Models

Filters, decompositions and single-series dynamics (1 official addon incl.)

13entries
Addon CORE

gig

An assortment of univariate GARCH models

Needs time-series data

C22
Riccardo "Jack" Lucchetti and Stefano Balietti 2026d-git2026-09-17
No.006 GFN

arima_sim

simulation of arima(p, d, q; P, D, Q) trajectories

Oleh Komashko v0.312024-05-19
No.007 GFN

armax

Automatically determine and show the best ARMAX model based on either the AIC, BIC, or HQC criterion.

Yi-Nung Yang v0.1012017-09-22
No.011 GFN

auto_arima

Return best SARIMA(X) model according to information criteria value

Artur Tarassow v0.92025-04-17
No.043 GFN

delayspectral

Calculates signal delays in frequency domain and their uncertainty

Sven Schreiber v1.02019-03-23
No.139 GFN

SETAR

Estimation of a SETAR model

Federico Lampis & Ignacio Díaz-Emparanza v1.52022-11-27

VAR, SVAR & Factor Models

Multivariate dynamic systems and common-factor structures (2 official addons incl.)

15entries
No.167 GFN

var_chow

Chow-test on parameter constancy for VAR models

Artur Tarassow v1.002022-09-16

Volatility & Financial Econometrics

GARCH-family models and market-data tools

6entries
No.029 GFN

carr

CARR models: ECARR and WCARR by Ray Y. Chou (2005, JCMB)

Yi-Nung Yang v0.812022-09-12
No.041 ZIP

DCC

Dynamic Conditional Correlation (Multivariate GARCH) model

Jack Lucchetti, Giulio Palomba and Luca Pedini v0.12023-03-10
No.114 GFNauto

nic_gig

News Impact Curves for GARCH and GJR-GARCH

Mary Mertzanidou and Theodore Panagiotidis v1.02026-09-16

Panel Data Models

Estimators and diagnostics for cross-section/time panels (1 official addon incl.)

17entries
No.068 ZIP

GFE

Grouped Fixed Effects for panel data

Riccardo "Jack" Lucchetti and Alessandro Pionati and Francesco Valentini v0.12026-07-28
No.131 GFN

retobit

Panel Tobit model with random effects

Riccardo Lucchetti and Sven Schreiber v0.912021-02-12
No.173 GFN

wooldridge_test_serial

Wooldridge's test for serial correlation of residuals in panel model

Giuseppe Vittucci Marzetti and Artur Tarassow v2.12019-09-02

Discrete & Limited-Dependent Models

Logit, probit, tobit, hurdle and count-data models (1 official addon incl.)

14entries
No.020 GFN

BMST

Binary (logit + probit) model specification tests

Artur Tarassow v2.12021-02-03
No.039 ZIP

CUB

Uniform-Binomial mixture model for ordinal data

Francesca Di Iorio, Rosaria Simone and Riccardo "Jack" Lucchetti v2.02026-05-19
No.085 GFN

ivintreg

Instrumental-variable Interval Regression

Riccardo "Jack" Lucchetti v1.32020-11-11
No.158 GFN

tobit_mfx

marginal effects after tobit and censored regression

Oleh Komashko v0.42021-06-27
No.157 GFN

tobithetm

Tobit model with multiplicative heteroskedasticity

Oleh Komashko v0.432018-02-12

Hypothesis Testing & Diagnostics

Standalone tests for model and data assumptions

14entries
No.015 GFN

bartlett

Bartlett's test for Homogeneity of Variance

Marcos Larios Santa Rosa v0.42021-06-28
No.063 GFN

Friedman

Friedman (and Quade) nonparametric c-sample tests

Sven Schreiber v1.22024-10-01
No.074 GFN

gqtest

obtains weights to use in wls, GQ het. test

Oleh Komashko v0.382026-07-17
No.081 GFN

hetero

Heteroskedasticity tests in Asteriou & Hall

Yi-Nung Yang v2023.32023-03-12
No.097 GFN

levene

Levene's Test for Equality of Variances

Marcos Larios Santa Rosa v0.42024-10-02
No.101 GFN

MannKendall

Mann-Kendall nonparametric trend test

Sven Schreiber and Riccardo Jack Lucchetti v1.12020-09-27
No.112 GFN

mwu

Mann-Whitney U test with group dummy variable

Yi-Nung Yang v0.952018-08-30
No.140 GFN

SFspec

Tests at once 12 specifications for the error term of the Stochastic Frontier model

Alecos Papadopoulos v1.02023-11-07
No.170 GFN

waldTest

Wald test for (non)linear restrictions and conf. intervals

Oleh Komashko v1.212024-05-17

Estimation & Regression Tools

General-purpose estimators and regression extensions (4 official addons incl.)

22entries
No.103 GFN

margeff_el

marg. effects, elasticities, prediction in presence of functions of vars.

Oleh Komashko v0.72021-02-21
No.141 GFN

ShapleyCont

Shapley based R-Squared decomposition

Ernesto Rivera y María José Arteaga v1.12019-05-23
No.142 GFN

sols

OLS showing standardized coefficients

Allin Cottrell v1.42021-03-26

Forecasting & Prediction

Point forecasts, smoothing and forecast evaluation

9entries
No.024 GFN

Brown

Brown linear and quadratic trend models

Ignacio Diaz-Emparanza v1.62022-06-10
No.046 GFN

DiebMar

Diebold-Mariano test for predictive accuracy

Giulio Palomba v1.42025-05-01

Machine Learning & Nonparametrics

Clustering, resampling, kernel and ensemble methods

17entries
No.055 GFN

fdensity

Factorized kernel density estimation

Artur Tarassow and Riccardo "Jack" Lucchetti v0.82025-02-03
No.089 GFN

kddensity

kernel estimation of bivariate densities

Riccardo "Jack" Lucchetti v1.12023-04-09
No.092 GFN

knn

K-nearest neighbor regression and classification

Artur Tarassow v0.12024-07-15
No.106 GFN

MDS

Multidimensional Scaling

Francesca Di Iorio and Riccardo "Jack" Lucchetti v1.32023-09-28
No.133 ZIP

roc

Computation and analysis of receiver operating characteristic curves (ROC) for binary choice models.

Peter M. Summers v1.22023-01-23

Spatial Econometrics

Models and statistics for spatial dependence

2entries
No.110 GFN

moran

Moran's I statistic of spatial autocorrelation

Giuseppe Vittucci v0.32022-06-09

Graphics & Visualization

Plots, charts and graphical diagnostics

9entries
No.032 GFN

coefcomp

graphical comparison of confidence intervals

Riccardo "Jack" Lucchetti v1.12024-05-16

Data Access & Management

Importing, downloading and reshaping data (3 official addons incl.)

11entries
No.108 GFN

metadata

Retrieve metadata from gdt files.

Riccardo "Jack" Lucchetti and Artur Tarassow v0.92020-12-18
No.175 GFN

yahoo_get

Downloader of daily financial data from Yahoo

Riccardo "Jack" Lucchetti v3.102026-10-10

Programming Utilities & GUI Tools

Scripting helpers, performance and package-development aids (3 official addons incl.)

19entries
No.010 GFN

assertion

Assert functions for verifying expectations and values in gretl tests

Artur Tarassow v1.02020-08-22
No.121 GFN

parallel_specs

Parallel execution of differing specifications

Sven Schreiber, Allin Cottrell, Artur Tarassow v0.32021-03-10
No.123 GFN

pkgchecker

Metrics on gfn package files and search for 'dead' code

Artur Tarassow v0.22021-07-12
No.135 GFN

SB

Stationary bootstrap resampling of time series

F. Di Iorio, S. Fachin, A. Tarassow, Riccardo "Jack" Lucchetti v1.42023-01-28
No.150 GFN

summary_xy

summary of Z categorized by two discrete series x and y

Yi-Nung Yang v2023.42023-04-03
No.174 GFN

wstats

weighted quantiles, frequencies and contingency tables

Riccardo "Jack" Lucchetti v1.32024-10-10

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